diff --git a/CODEOWNERS b/CODEOWNERS
index 03bafdd0b38..d1890a91b49 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -1703,6 +1703,8 @@ build.json @home-assistant/supervisor
 /tests/components/tellduslive/ @fredrike
 /homeassistant/components/teltonika/ @karlbeecken
 /tests/components/teltonika/ @karlbeecken
+/homeassistant/components/temperature/ @home-assistant/core
+/tests/components/temperature/ @home-assistant/core
 /homeassistant/components/template/ @Petro31 @home-assistant/core
 /tests/components/template/ @Petro31 @home-assistant/core
 /homeassistant/components/tesla_fleet/ @Bre77
diff --git a/homeassistant/bootstrap.py b/homeassistant/bootstrap.py
index 8590bc8fdfd..28a5ab31019 100644
--- a/homeassistant/bootstrap.py
+++ b/homeassistant/bootstrap.py
@@ -247,6 +247,7 @@ DEFAULT_INTEGRATIONS = {
     "humidity",
     "motion",
     "occupancy",
+    "temperature",
     "window",
 }
 DEFAULT_INTEGRATIONS_RECOVERY_MODE = {
diff --git a/homeassistant/components/automation/__init__.py b/homeassistant/components/automation/__init__.py
index c4695b81d68..a7b51785c1a 100644
--- a/homeassistant/components/automation/__init__.py
+++ b/homeassistant/components/automation/__init__.py
@@ -169,6 +169,7 @@ _EXPERIMENTAL_TRIGGER_PLATFORMS = {
     "select",
     "siren",
     "switch",
+    "temperature",
     "text",
     "update",
     "vacuum",
diff --git a/homeassistant/components/temperature/__init__.py b/homeassistant/components/temperature/__init__.py
new file mode 100644
index 00000000000..4479fdbefc7
--- /dev/null
+++ b/homeassistant/components/temperature/__init__.py
@@ -0,0 +1,17 @@
+"""Integration for temperature triggers."""
+
+from __future__ import annotations
+
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import config_validation as cv
+from homeassistant.helpers.typing import ConfigType
+
+DOMAIN = "temperature"
+CONFIG_SCHEMA = cv.empty_config_schema(DOMAIN)
+
+__all__ = []
+
+
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
+    """Set up the component."""
+    return True
diff --git a/homeassistant/components/temperature/icons.json b/homeassistant/components/temperature/icons.json
new file mode 100644
index 00000000000..a7a88db9973
--- /dev/null
+++ b/homeassistant/components/temperature/icons.json
@@ -0,0 +1,10 @@
+{
+  "triggers": {
+    "changed": {
+      "trigger": "mdi:thermometer"
+    },
+    "crossed_threshold": {
+      "trigger": "mdi:thermometer"
+    }
+  }
+}
diff --git a/homeassistant/components/temperature/manifest.json b/homeassistant/components/temperature/manifest.json
new file mode 100644
index 00000000000..690896259ba
--- /dev/null
+++ b/homeassistant/components/temperature/manifest.json
@@ -0,0 +1,8 @@
+{
+  "domain": "temperature",
+  "name": "Temperature",
+  "codeowners": ["@home-assistant/core"],
+  "documentation": "https://www.home-assistant.io/integrations/temperature",
+  "integration_type": "system",
+  "quality_scale": "internal"
+}
diff --git a/homeassistant/components/temperature/strings.json b/homeassistant/components/temperature/strings.json
new file mode 100644
index 00000000000..36e241fb805
--- /dev/null
+++ b/homeassistant/components/temperature/strings.json
@@ -0,0 +1,76 @@
+{
+  "common": {
+    "trigger_behavior_description": "The behavior of the targeted entities to trigger on.",
+    "trigger_behavior_name": "Behavior"
+  },
+  "selector": {
+    "number_or_entity": {
+      "choices": {
+        "entity": "Entity",
+        "number": "Number"
+      }
+    },
+    "trigger_behavior": {
+      "options": {
+        "any": "Any",
+        "first": "First",
+        "last": "Last"
+      }
+    },
+    "trigger_threshold_type": {
+      "options": {
+        "above": "Above",
+        "below": "Below",
+        "between": "Between",
+        "outside": "Outside"
+      }
+    }
+  },
+  "title": "Temperature",
+  "triggers": {
+    "changed": {
+      "description": "Triggers when the temperature changes.",
+      "fields": {
+        "above": {
+          "description": "Only trigger when temperature is above this value.",
+          "name": "Above"
+        },
+        "below": {
+          "description": "Only trigger when temperature is below this value.",
+          "name": "Below"
+        },
+        "unit": {
+          "description": "All values will be converted to this unit when evaluating the trigger.",
+          "name": "Unit of measurement"
+        }
+      },
+      "name": "Temperature changed"
+    },
+    "crossed_threshold": {
+      "description": "Triggers when the temperature crosses a threshold.",
+      "fields": {
+        "behavior": {
+          "description": "[%key:component::temperature::common::trigger_behavior_description%]",
+          "name": "[%key:component::temperature::common::trigger_behavior_name%]"
+        },
+        "lower_limit": {
+          "description": "The lower limit of the threshold.",
+          "name": "Lower limit"
+        },
+        "threshold_type": {
+          "description": "The type of threshold to use.",
+          "name": "Threshold type"
+        },
+        "unit": {
+          "description": "[%key:component::temperature::triggers::changed::fields::unit::description%]",
+          "name": "[%key:component::temperature::triggers::changed::fields::unit::name%]"
+        },
+        "upper_limit": {
+          "description": "The upper limit of the threshold.",
+          "name": "Upper limit"
+        }
+      },
+      "name": "Temperature crossed threshold"
+    }
+  }
+}
diff --git a/homeassistant/components/temperature/trigger.py b/homeassistant/components/temperature/trigger.py
new file mode 100644
index 00000000000..c255d39d129
--- /dev/null
+++ b/homeassistant/components/temperature/trigger.py
@@ -0,0 +1,83 @@
+"""Provides triggers for temperature."""
+
+from __future__ import annotations
+
+from homeassistant.components.climate import (
+    ATTR_CURRENT_TEMPERATURE as CLIMATE_ATTR_CURRENT_TEMPERATURE,
+    DOMAIN as CLIMATE_DOMAIN,
+)
+from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN, SensorDeviceClass
+from homeassistant.components.water_heater import (
+    ATTR_CURRENT_TEMPERATURE as WATER_HEATER_ATTR_CURRENT_TEMPERATURE,
+    DOMAIN as WATER_HEATER_DOMAIN,
+)
+from homeassistant.components.weather import (
+    ATTR_WEATHER_TEMPERATURE,
+    ATTR_WEATHER_TEMPERATURE_UNIT,
+    DOMAIN as WEATHER_DOMAIN,
+)
+from homeassistant.const import ATTR_UNIT_OF_MEASUREMENT, UnitOfTemperature
+from homeassistant.core import HomeAssistant, State
+from homeassistant.helpers.automation import NumericalDomainSpec
+from homeassistant.helpers.trigger import (
+    EntityNumericalStateChangedTriggerWithUnitBase,
+    EntityNumericalStateCrossedThresholdTriggerWithUnitBase,
+    EntityNumericalStateTriggerWithUnitBase,
+    Trigger,
+)
+from homeassistant.util.unit_conversion import TemperatureConverter
+
+TEMPERATURE_DOMAIN_SPECS = {
+    CLIMATE_DOMAIN: NumericalDomainSpec(
+        value_source=CLIMATE_ATTR_CURRENT_TEMPERATURE,
+    ),
+    SENSOR_DOMAIN: NumericalDomainSpec(
+        device_class=SensorDeviceClass.TEMPERATURE,
+    ),
+    WATER_HEATER_DOMAIN: NumericalDomainSpec(
+        value_source=WATER_HEATER_ATTR_CURRENT_TEMPERATURE
+    ),
+    WEATHER_DOMAIN: NumericalDomainSpec(
+        value_source=ATTR_WEATHER_TEMPERATURE,
+    ),
+}
+
+
+class _TemperatureTriggerMixin(EntityNumericalStateTriggerWithUnitBase):
+    """Mixin for temperature triggers providing entity filtering, value extraction, and unit conversion."""
+
+    _base_unit = UnitOfTemperature.CELSIUS
+    _domain_specs = TEMPERATURE_DOMAIN_SPECS
+    _unit_converter = TemperatureConverter
+
+    def _get_entity_unit(self, state: State) -> str | None:
+        """Get the temperature unit of an entity from its state."""
+        if state.domain == SENSOR_DOMAIN:
+            return state.attributes.get(ATTR_UNIT_OF_MEASUREMENT)
+        if state.domain == WEATHER_DOMAIN:
+            return state.attributes.get(ATTR_WEATHER_TEMPERATURE_UNIT)
+        # Climate and water_heater: show_temp converts to system unit
+        return self._hass.config.units.temperature_unit
+
+
+class TemperatureChangedTrigger(
+    _TemperatureTriggerMixin, EntityNumericalStateChangedTriggerWithUnitBase
+):
+    """Trigger for temperature value changes across multiple domains."""
+
+
+class TemperatureCrossedThresholdTrigger(
+    _TemperatureTriggerMixin, EntityNumericalStateCrossedThresholdTriggerWithUnitBase
+):
+    """Trigger for temperature value crossing a threshold across multiple domains."""
+
+
+TRIGGERS: dict[str, type[Trigger]] = {
+    "changed": TemperatureChangedTrigger,
+    "crossed_threshold": TemperatureCrossedThresholdTrigger,
+}
+
+
+async def async_get_triggers(hass: HomeAssistant) -> dict[str, type[Trigger]]:
+    """Return the triggers for temperature."""
+    return TRIGGERS
diff --git a/homeassistant/components/temperature/triggers.yaml b/homeassistant/components/temperature/triggers.yaml
new file mode 100644
index 00000000000..a0bdaf9d9ad
--- /dev/null
+++ b/homeassistant/components/temperature/triggers.yaml
@@ -0,0 +1,77 @@
+.trigger_common_fields:
+  behavior: &trigger_behavior
+    required: true
+    default: any
+    selector:
+      select:
+        translation_key: trigger_behavior
+        options:
+          - first
+          - last
+          - any
+
+.number_or_entity: &number_or_entity
+  required: false
+  selector:
+    choose:
+      choices:
+        number:
+          selector:
+            number:
+              mode: box
+        entity:
+          selector:
+            entity:
+              filter:
+                - domain: input_number
+                  unit_of_measurement:
+                    - "°C"
+                    - "°F"
+                - domain: sensor
+                  device_class: temperature
+                - domain: number
+                  device_class: temperature
+      translation_key: number_or_entity
+
+.trigger_threshold_type: &trigger_threshold_type
+  required: true
+  default: above
+  selector:
+    select:
+      options:
+        - above
+        - below
+        - between
+        - outside
+      translation_key: trigger_threshold_type
+
+.trigger_unit: &trigger_unit
+  required: false
+  selector:
+    select:
+      options:
+        - "°C"
+        - "°F"
+.trigger_target: &trigger_target
+  entity:
+    - domain: sensor
+      device_class: temperature
+    - domain: climate
+    - domain: water_heater
+    - domain: weather
+
+changed:
+  target: *trigger_target
+  fields:
+    above: *number_or_entity
+    below: *number_or_entity
+    unit: *trigger_unit
+
+crossed_threshold:
+  target: *trigger_target
+  fields:
+    behavior: *trigger_behavior
+    threshold_type: *trigger_threshold_type
+    lower_limit: *number_or_entity
+    upper_limit: *number_or_entity
+    unit: *trigger_unit
diff --git a/homeassistant/helpers/automation.py b/homeassistant/helpers/automation.py
index f928331b99a..f1b90051374 100644
--- a/homeassistant/helpers/automation.py
+++ b/homeassistant/helpers/automation.py
@@ -39,7 +39,7 @@ class DomainSpec:
 class NumericalDomainSpec(DomainSpec):
     """DomainSpec with an optional value converter for numerical triggers."""
 
-    value_converter: Callable[[Any], float] | None = None
+    value_converter: Callable[[float], float] | None = None
     """Optional converter for numerical values (e.g. uint8 → percentage)."""
 
 
diff --git a/homeassistant/helpers/trigger.py b/homeassistant/helpers/trigger.py
index 6e0d4af2a90..009234f2294 100644
--- a/homeassistant/helpers/trigger.py
+++ b/homeassistant/helpers/trigger.py
@@ -26,6 +26,7 @@ import voluptuous as vol
 
 from homeassistant.const import (
     ATTR_ENTITY_ID,
+    ATTR_UNIT_OF_MEASUREMENT,
     CONF_ABOVE,
     CONF_ALIAS,
     CONF_BELOW,
@@ -64,6 +65,7 @@ from homeassistant.loader import (
 )
 from homeassistant.util.async_ import create_eager_task
 from homeassistant.util.hass_dict import HassKey
+from homeassistant.util.unit_conversion import BaseUnitConverter
 from homeassistant.util.yaml import load_yaml_dict
 
 from . import config_validation as cv, selector
@@ -519,7 +521,7 @@ def _validate_range[_T: dict[str, Any]](
 ) -> Callable[[_T], _T]:
     """Generate range validator."""
 
-    def _validate_range(value: _T) -> _T:
+    def _validate_range_impl(value: _T) -> _T:
         above = value.get(lower_limit)
         below = value.get(upper_limit)
 
@@ -539,7 +541,28 @@ def _validate_range[_T: dict[str, Any]](
 
         return value
 
-    return _validate_range
+    return _validate_range_impl
+
+
+CONF_UNIT: Final = "unit"
+
+
+def _validate_unit_set_if_range_numerical[_T: dict[str, Any]](
+    lower_limit: str, upper_limit: str
+) -> Callable[[_T], _T]:
+    """Validate that unit is set if upper or lower limit is numerical."""
+
+    def _validate_unit_set_if_range_numerical_impl(options: _T) -> _T:
+        if (
+            any(
+                opt in options and not isinstance(options[opt], str)
+                for opt in (lower_limit, upper_limit)
+            )
+        ) and options.get(CONF_UNIT) is None:
+            raise vol.Invalid("Unit must be specified when using numerical thresholds.")
+        return options
+
+    return _validate_unit_set_if_range_numerical_impl
 
 
 _NUMBER_OR_ENTITY_CHOOSE_SCHEMA = vol.Schema(
@@ -576,38 +599,107 @@ NUMERICAL_ATTRIBUTE_CHANGED_TRIGGER_SCHEMA = ENTITY_STATE_TRIGGER_SCHEMA.extend(
 )
 
 
-def _get_numerical_value(
-    hass: HomeAssistant, entity_or_float: float | str
-) -> float | None:
-    """Get numerical value from float or entity state."""
-    if isinstance(entity_or_float, str):
-        if not (state := hass.states.get(entity_or_float)):
-            # Entity not found
-            return None
-        try:
-            return float(state.state)
-        except TypeError, ValueError:
-            # Entity state is not a valid number
-            return None
-    return entity_or_float
-
-
 class EntityNumericalStateTriggerBase(EntityTriggerBase[NumericalDomainSpec]):
     """Base class for numerical state and state attribute triggers."""
 
-    def _get_tracked_value(self, state: State) -> Any:
+    def _get_numerical_value(self, entity_or_float: float | str) -> float | None:
+        """Get numerical value from float or entity state."""
+        if isinstance(entity_or_float, str):
+            if not (state := self._hass.states.get(entity_or_float)):
+                # Entity not found
+                return None
+            try:
+                return float(state.state)
+            except TypeError, ValueError:
+                # Entity state is not a valid number
+                return None
+        return entity_or_float
+
+    def _get_tracked_value(self, state: State) -> float | None:
         """Get the tracked numerical value from a state."""
         domain_spec = self._domain_specs[state.domain]
+        raw_value: Any
         if domain_spec.value_source is None:
-            return state.state
-        return state.attributes.get(domain_spec.value_source)
+            raw_value = state.state
+        else:
+            raw_value = state.attributes.get(domain_spec.value_source)
 
-    def _get_converter(self, state: State) -> Callable[[Any], float]:
+        try:
+            return float(raw_value)
+        except TypeError, ValueError:
+            # Entity state is not a valid number
+            return None
+
+    def _get_converter(self, state: State) -> Callable[[float], float]:
         """Get the value converter for an entity."""
         domain_spec = self._domain_specs[state.domain]
         if domain_spec.value_converter is not None:
             return domain_spec.value_converter
-        return float
+        return lambda x: x
+
+
+class EntityNumericalStateTriggerWithUnitBase(EntityNumericalStateTriggerBase):
+    """Base class for numerical state and state attribute triggers."""
+
+    _base_unit: str  # Base unit for the tracked value
+    _manual_limit_unit: str | None  # Unit of above/below limits when numbers
+    _unit_converter: type[BaseUnitConverter]
+
+    def __init__(self, hass: HomeAssistant, config: TriggerConfig) -> None:
+        """Initialize the trigger."""
+        super().__init__(hass, config)
+        self._manual_limit_unit = self._options.get(CONF_UNIT)
+
+    def _get_entity_unit(self, state: State) -> str | None:
+        """Get the unit of an entity from its state."""
+        return state.attributes.get(ATTR_UNIT_OF_MEASUREMENT)
+
+    def _get_numerical_value(self, entity_or_float: float | str) -> float | None:
+        """Get numerical value from float or entity state."""
+        if isinstance(entity_or_float, (int, float)):
+            return self._unit_converter.convert(
+                entity_or_float, self._manual_limit_unit, self._base_unit
+            )
+
+        if not (state := self._hass.states.get(entity_or_float)):
+            # Entity not found
+            return None
+        try:
+            value = float(state.state)
+        except TypeError, ValueError:
+            # Entity state is not a valid number
+            return None
+
+        try:
+            return self._unit_converter.convert(
+                value, state.attributes.get(ATTR_UNIT_OF_MEASUREMENT), self._base_unit
+            )
+        except HomeAssistantError:
+            # Unit conversion failed (i.e. incompatible units), treat as invalid number
+            return None
+
+    def _get_tracked_value(self, state: State) -> float | None:
+        """Get the tracked numerical value from a state."""
+        domain_spec = self._domain_specs[state.domain]
+        raw_value: Any
+        if domain_spec.value_source is None:
+            raw_value = state.state
+        else:
+            raw_value = state.attributes.get(domain_spec.value_source)
+
+        try:
+            value = float(raw_value)
+        except TypeError, ValueError:
+            # Entity state is not a valid number
+            return None
+
+        try:
+            return self._unit_converter.convert(
+                value, self._get_entity_unit(state), self._base_unit
+            )
+        except HomeAssistantError:
+            # Unit conversion failed (i.e. incompatible units), treat as invalid number
+            return None
 
 
 class EntityNumericalStateChangedTriggerBase(EntityNumericalStateTriggerBase):
@@ -629,7 +721,7 @@ class EntityNumericalStateChangedTriggerBase(EntityNumericalStateTriggerBase):
         if from_state.state in (STATE_UNAVAILABLE, STATE_UNKNOWN):
             return False
 
-        return self._get_tracked_value(from_state) != self._get_tracked_value(to_state)  # type: ignore[no-any-return]
+        return self._get_tracked_value(from_state) != self._get_tracked_value(to_state)
 
     def is_valid_state(self, state: State) -> bool:
         """Check if the new state or state attribute matches the expected one."""
@@ -637,14 +729,10 @@ class EntityNumericalStateChangedTriggerBase(EntityNumericalStateTriggerBase):
         if (_attribute_value := self._get_tracked_value(state)) is None:
             return False
 
-        try:
-            current_value = self._get_converter(state)(_attribute_value)
-        except TypeError, ValueError:
-            # Value is not a valid number, don't trigger
-            return False
+        current_value = self._get_converter(state)(_attribute_value)
 
         if self._above is not None:
-            if (above := _get_numerical_value(self._hass, self._above)) is None:
+            if (above := self._get_numerical_value(self._above)) is None:
                 # Entity not found or invalid number, don't trigger
                 return False
             if current_value <= above:
@@ -652,7 +740,7 @@ class EntityNumericalStateChangedTriggerBase(EntityNumericalStateTriggerBase):
                 return False
 
         if self._below is not None:
-            if (below := _get_numerical_value(self._hass, self._below)) is None:
+            if (below := self._get_numerical_value(self._below)) is None:
                 # Entity not found or invalid number, don't trigger
                 return False
             if current_value >= below:
@@ -662,6 +750,37 @@ class EntityNumericalStateChangedTriggerBase(EntityNumericalStateTriggerBase):
         return True
 
 
+def make_numerical_state_changed_with_unit_schema(
+    unit_converter: type[BaseUnitConverter],
+) -> vol.Schema:
+    """Factory for numerical state trigger schema with unit option."""
+    return ENTITY_STATE_TRIGGER_SCHEMA.extend(
+        {
+            vol.Required(CONF_OPTIONS, default={}): vol.All(
+                {
+                    vol.Optional(CONF_ABOVE): _number_or_entity,
+                    vol.Optional(CONF_BELOW): _number_or_entity,
+                    vol.Optional(CONF_UNIT): vol.In(unit_converter.VALID_UNITS),
+                },
+                _validate_range(CONF_ABOVE, CONF_BELOW),
+                _validate_unit_set_if_range_numerical(CONF_ABOVE, CONF_BELOW),
+            )
+        }
+    )
+
+
+class EntityNumericalStateChangedTriggerWithUnitBase(
+    EntityNumericalStateChangedTriggerBase,
+    EntityNumericalStateTriggerWithUnitBase,
+):
+    """Trigger for numerical state and state attribute changes."""
+
+    def __init_subclass__(cls, **kwargs: Any) -> None:
+        """Create a schema."""
+        super().__init_subclass__(**kwargs)
+        cls._schema = make_numerical_state_changed_with_unit_schema(cls._unit_converter)
+
+
 CONF_LOWER_LIMIT = "lower_limit"
 CONF_UPPER_LIMIT = "upper_limit"
 CONF_THRESHOLD_TYPE = "threshold_type"
@@ -744,16 +863,12 @@ class EntityNumericalStateCrossedThresholdTriggerBase(EntityNumericalStateTrigge
     def is_valid_state(self, state: State) -> bool:
         """Check if the new state attribute matches the expected one."""
         if self._lower_limit is not None:
-            if (
-                lower_limit := _get_numerical_value(self._hass, self._lower_limit)
-            ) is None:
+            if (lower_limit := self._get_numerical_value(self._lower_limit)) is None:
                 # Entity not found or invalid number, don't trigger
                 return False
 
         if self._upper_limit is not None:
-            if (
-                upper_limit := _get_numerical_value(self._hass, self._upper_limit)
-            ) is None:
+            if (upper_limit := self._get_numerical_value(self._upper_limit)) is None:
                 # Entity not found or invalid number, don't trigger
                 return False
 
@@ -761,11 +876,7 @@ class EntityNumericalStateCrossedThresholdTriggerBase(EntityNumericalStateTrigge
         if (_attribute_value := self._get_tracked_value(state)) is None:
             return False
 
-        try:
-            current_value = self._get_converter(state)(_attribute_value)
-        except TypeError, ValueError:
-            # Value is not a valid number, don't trigger
-            return False
+        current_value = self._get_converter(state)(_attribute_value)
 
         # Note: We do not need to check for lower_limit/upper_limit being None here
         # because of the validation done in the schema.
@@ -781,6 +892,50 @@ class EntityNumericalStateCrossedThresholdTriggerBase(EntityNumericalStateTrigge
         return not between
 
 
+def make_numerical_state_crossed_threshold_with_unit_schema(
+    unit_converter: type[BaseUnitConverter],
+) -> vol.Schema:
+    """Trigger for numerical state and state attribute changes.
+
+    This trigger only fires when the observed attribute changes from not within to within
+    the defined threshold.
+    """
+    return ENTITY_STATE_TRIGGER_SCHEMA.extend(
+        {
+            vol.Required(CONF_OPTIONS, default={}): vol.All(
+                {
+                    vol.Required(ATTR_BEHAVIOR, default=BEHAVIOR_ANY): vol.In(
+                        [BEHAVIOR_FIRST, BEHAVIOR_LAST, BEHAVIOR_ANY]
+                    ),
+                    vol.Optional(CONF_LOWER_LIMIT): _number_or_entity,
+                    vol.Optional(CONF_UPPER_LIMIT): _number_or_entity,
+                    vol.Required(CONF_THRESHOLD_TYPE): vol.Coerce(ThresholdType),
+                    vol.Optional(CONF_UNIT): vol.In(unit_converter.VALID_UNITS),
+                },
+                _validate_range(CONF_LOWER_LIMIT, CONF_UPPER_LIMIT),
+                _validate_limits_for_threshold_type,
+                _validate_unit_set_if_range_numerical(
+                    CONF_LOWER_LIMIT, CONF_UPPER_LIMIT
+                ),
+            )
+        }
+    )
+
+
+class EntityNumericalStateCrossedThresholdTriggerWithUnitBase(
+    EntityNumericalStateCrossedThresholdTriggerBase,
+    EntityNumericalStateTriggerWithUnitBase,
+):
+    """Trigger for numerical state and state attribute changes."""
+
+    def __init_subclass__(cls, **kwargs: Any) -> None:
+        """Create a schema."""
+        super().__init_subclass__(**kwargs)
+        cls._schema = make_numerical_state_crossed_threshold_with_unit_schema(
+            cls._unit_converter
+        )
+
+
 def _normalize_domain_specs(
     domain_specs: Mapping[str, DomainSpec] | str,
 ) -> Mapping[str, DomainSpec]:
diff --git a/script/hassfest/manifest.py b/script/hassfest/manifest.py
index fb241dfc73c..b971a3d20cb 100644
--- a/script/hassfest/manifest.py
+++ b/script/hassfest/manifest.py
@@ -120,6 +120,7 @@ NO_IOT_CLASS = [
     "system_health",
     "system_log",
     "tag",
+    "temperature",
     "timer",
     "trace",
     "web_rtc",
diff --git a/script/hassfest/quality_scale.py b/script/hassfest/quality_scale.py
index 28c5067c6b4..109c70415c6 100644
--- a/script/hassfest/quality_scale.py
+++ b/script/hassfest/quality_scale.py
@@ -2149,6 +2149,7 @@ NO_QUALITY_SCALE = [
     "system_health",
     "system_log",
     "tag",
+    "temperature",
     "timer",
     "trace",
     "usage_prediction",
diff --git a/tests/components/common.py b/tests/components/common.py
index 45806423c18..b2cd6873457 100644
--- a/tests/components/common.py
+++ b/tests/components/common.py
@@ -518,54 +518,75 @@ def parametrize_trigger_states(
 
 
 def parametrize_numerical_attribute_changed_trigger_states(
-    trigger: str, state: str, attribute: str
+    trigger: str,
+    state: str,
+    attribute: str,
+    *,
+    trigger_options: dict[str, Any] | None = None,
+    required_filter_attributes: dict | None = None,
+    unit_attributes: dict | None = None,
 ) -> list[tuple[str, dict[str, Any], list[TriggerStateDescription]]]:
     """Parametrize states and expected service call counts for numerical changed triggers."""
+    trigger_options = trigger_options or {}
+    unit_attributes = unit_attributes or {}
+
     return [
         *parametrize_trigger_states(
             trigger=trigger,
-            trigger_options={},
+            trigger_options={**trigger_options},
             target_states=[
-                (state, {attribute: 0}),
-                (state, {attribute: 50}),
-                (state, {attribute: 100}),
+                (state, {attribute: 0} | unit_attributes),
+                (state, {attribute: 50} | unit_attributes),
+                (state, {attribute: 100} | unit_attributes),
             ],
-            other_states=[(state, {attribute: None})],
+            other_states=[(state, {attribute: None} | unit_attributes)],
+            required_filter_attributes=required_filter_attributes,
             retrigger_on_target_state=True,
         ),
         *parametrize_trigger_states(
             trigger=trigger,
-            trigger_options={CONF_ABOVE: 10},
+            trigger_options={CONF_ABOVE: 10, **trigger_options},
             target_states=[
-                (state, {attribute: 50}),
-                (state, {attribute: 100}),
+                (state, {attribute: 50} | unit_attributes),
+                (state, {attribute: 100} | unit_attributes),
             ],
             other_states=[
-                (state, {attribute: None}),
-                (state, {attribute: 0}),
+                (state, {attribute: None} | unit_attributes),
+                (state, {attribute: 0} | unit_attributes),
             ],
+            required_filter_attributes=required_filter_attributes,
             retrigger_on_target_state=True,
         ),
         *parametrize_trigger_states(
             trigger=trigger,
-            trigger_options={CONF_BELOW: 90},
+            trigger_options={CONF_BELOW: 90, **trigger_options},
             target_states=[
-                (state, {attribute: 0}),
-                (state, {attribute: 50}),
+                (state, {attribute: 0} | unit_attributes),
+                (state, {attribute: 50} | unit_attributes),
             ],
             other_states=[
-                (state, {attribute: None}),
-                (state, {attribute: 100}),
+                (state, {attribute: None} | unit_attributes),
+                (state, {attribute: 100} | unit_attributes),
             ],
+            required_filter_attributes=required_filter_attributes,
             retrigger_on_target_state=True,
         ),
     ]
 
 
 def parametrize_numerical_attribute_crossed_threshold_trigger_states(
-    trigger: str, state: str, attribute: str
+    trigger: str,
+    state: str,
+    attribute: str,
+    *,
+    trigger_options: dict[str, Any] | None = None,
+    required_filter_attributes: dict | None = None,
+    unit_attributes: dict | None = None,
 ) -> list[tuple[str, dict[str, Any], list[TriggerStateDescription]]]:
     """Parametrize states and expected service call counts for numerical crossed threshold triggers."""
+    trigger_options = trigger_options or {}
+    unit_attributes = unit_attributes or {}
+
     return [
         *parametrize_trigger_states(
             trigger=trigger,
@@ -573,16 +594,18 @@ def parametrize_numerical_attribute_crossed_threshold_trigger_states(
                 CONF_THRESHOLD_TYPE: ThresholdType.BETWEEN,
                 CONF_LOWER_LIMIT: 10,
                 CONF_UPPER_LIMIT: 90,
+                **trigger_options,
             },
             target_states=[
-                (state, {attribute: 50}),
-                (state, {attribute: 60}),
+                (state, {attribute: 50} | unit_attributes),
+                (state, {attribute: 60} | unit_attributes),
             ],
             other_states=[
-                (state, {attribute: None}),
-                (state, {attribute: 0}),
-                (state, {attribute: 100}),
+                (state, {attribute: None} | unit_attributes),
+                (state, {attribute: 0} | unit_attributes),
+                (state, {attribute: 100} | unit_attributes),
             ],
+            required_filter_attributes=required_filter_attributes,
         ),
         *parametrize_trigger_states(
             trigger=trigger,
@@ -590,52 +613,62 @@ def parametrize_numerical_attribute_crossed_threshold_trigger_states(
                 CONF_THRESHOLD_TYPE: ThresholdType.OUTSIDE,
                 CONF_LOWER_LIMIT: 10,
                 CONF_UPPER_LIMIT: 90,
+                **trigger_options,
             },
             target_states=[
-                (state, {attribute: 0}),
-                (state, {attribute: 100}),
+                (state, {attribute: 0} | unit_attributes),
+                (state, {attribute: 100} | unit_attributes),
             ],
             other_states=[
-                (state, {attribute: None}),
-                (state, {attribute: 50}),
-                (state, {attribute: 60}),
+                (state, {attribute: None} | unit_attributes),
+                (state, {attribute: 50} | unit_attributes),
+                (state, {attribute: 60} | unit_attributes),
             ],
+            required_filter_attributes=required_filter_attributes,
         ),
         *parametrize_trigger_states(
             trigger=trigger,
             trigger_options={
                 CONF_THRESHOLD_TYPE: ThresholdType.ABOVE,
                 CONF_LOWER_LIMIT: 10,
+                **trigger_options,
             },
             target_states=[
-                (state, {attribute: 50}),
-                (state, {attribute: 100}),
+                (state, {attribute: 50} | unit_attributes),
+                (state, {attribute: 100} | unit_attributes),
             ],
             other_states=[
-                (state, {attribute: None}),
-                (state, {attribute: 0}),
+                (state, {attribute: None} | unit_attributes),
+                (state, {attribute: 0} | unit_attributes),
             ],
+            required_filter_attributes=required_filter_attributes,
         ),
         *parametrize_trigger_states(
             trigger=trigger,
             trigger_options={
                 CONF_THRESHOLD_TYPE: ThresholdType.BELOW,
                 CONF_UPPER_LIMIT: 90,
+                **trigger_options,
             },
             target_states=[
-                (state, {attribute: 0}),
-                (state, {attribute: 50}),
+                (state, {attribute: 0} | unit_attributes),
+                (state, {attribute: 50} | unit_attributes),
             ],
             other_states=[
-                (state, {attribute: None}),
-                (state, {attribute: 100}),
+                (state, {attribute: None} | unit_attributes),
+                (state, {attribute: 100} | unit_attributes),
             ],
+            required_filter_attributes=required_filter_attributes,
         ),
     ]
 
 
 def parametrize_numerical_state_value_changed_trigger_states(
-    trigger: str, device_class: str
+    trigger: str,
+    *,
+    device_class: str,
+    trigger_options: dict[str, Any] | None = None,
+    unit_attributes: dict | None = None,
 ) -> list[tuple[str, dict[str, Any], list[TriggerStateDescription]]]:
     """Parametrize states and expected service call counts for numerical state-value changed triggers.
 
@@ -646,30 +679,37 @@ def parametrize_numerical_state_value_changed_trigger_states(
     from homeassistant.const import ATTR_DEVICE_CLASS  # noqa: PLC0415
 
     required_filter_attributes = {ATTR_DEVICE_CLASS: device_class}
+    trigger_options = trigger_options or {}
+    unit_attributes = unit_attributes or {}
+
     return [
         *parametrize_trigger_states(
             trigger=trigger,
-            trigger_options={},
-            target_states=["0", "50", "100"],
-            other_states=["none"],
+            trigger_options=trigger_options,
+            target_states=[
+                ("0", unit_attributes),
+                ("50", unit_attributes),
+                ("100", unit_attributes),
+            ],
+            other_states=[("none", unit_attributes)],
             required_filter_attributes=required_filter_attributes,
             retrigger_on_target_state=True,
             trigger_from_none=False,
         ),
         *parametrize_trigger_states(
             trigger=trigger,
-            trigger_options={CONF_ABOVE: 10},
-            target_states=["50", "100"],
-            other_states=["none", "0"],
+            trigger_options={CONF_ABOVE: 10} | trigger_options,
+            target_states=[("50", unit_attributes), ("100", unit_attributes)],
+            other_states=[("none", unit_attributes), ("0", unit_attributes)],
             required_filter_attributes=required_filter_attributes,
             retrigger_on_target_state=True,
             trigger_from_none=False,
         ),
         *parametrize_trigger_states(
             trigger=trigger,
-            trigger_options={CONF_BELOW: 90},
-            target_states=["0", "50"],
-            other_states=["none", "100"],
+            trigger_options={CONF_BELOW: 90} | trigger_options,
+            target_states=[("0", unit_attributes), ("50", unit_attributes)],
+            other_states=[("none", unit_attributes), ("100", unit_attributes)],
             required_filter_attributes=required_filter_attributes,
             retrigger_on_target_state=True,
             trigger_from_none=False,
@@ -678,7 +718,11 @@ def parametrize_numerical_state_value_changed_trigger_states(
 
 
 def parametrize_numerical_state_value_crossed_threshold_trigger_states(
-    trigger: str, device_class: str
+    trigger: str,
+    *,
+    device_class: str,
+    trigger_options: dict[str, Any] | None = None,
+    unit_attributes: dict | None = None,
 ) -> list[tuple[str, dict[str, Any], list[TriggerStateDescription]]]:
     """Parametrize states and expected service call counts for numerical state-value crossed threshold triggers.
 
@@ -689,6 +733,9 @@ def parametrize_numerical_state_value_crossed_threshold_trigger_states(
     from homeassistant.const import ATTR_DEVICE_CLASS  # noqa: PLC0415
 
     required_filter_attributes = {ATTR_DEVICE_CLASS: device_class}
+    trigger_options = trigger_options or {}
+    unit_attributes = unit_attributes or {}
+
     return [
         *parametrize_trigger_states(
             trigger=trigger,
@@ -696,9 +743,14 @@ def parametrize_numerical_state_value_crossed_threshold_trigger_states(
                 CONF_THRESHOLD_TYPE: ThresholdType.BETWEEN,
                 CONF_LOWER_LIMIT: 10,
                 CONF_UPPER_LIMIT: 90,
+                **trigger_options,
             },
-            target_states=["50", "60"],
-            other_states=["none", "0", "100"],
+            target_states=[("50", unit_attributes), ("60", unit_attributes)],
+            other_states=[
+                ("none", unit_attributes),
+                ("0", unit_attributes),
+                ("100", unit_attributes),
+            ],
             required_filter_attributes=required_filter_attributes,
             trigger_from_none=False,
         ),
@@ -708,9 +760,14 @@ def parametrize_numerical_state_value_crossed_threshold_trigger_states(
                 CONF_THRESHOLD_TYPE: ThresholdType.OUTSIDE,
                 CONF_LOWER_LIMIT: 10,
                 CONF_UPPER_LIMIT: 90,
+                **trigger_options,
             },
-            target_states=["0", "100"],
-            other_states=["none", "50", "60"],
+            target_states=[("0", unit_attributes), ("100", unit_attributes)],
+            other_states=[
+                ("none", unit_attributes),
+                ("50", unit_attributes),
+                ("60", unit_attributes),
+            ],
             required_filter_attributes=required_filter_attributes,
             trigger_from_none=False,
         ),
@@ -719,9 +776,10 @@ def parametrize_numerical_state_value_crossed_threshold_trigger_states(
             trigger_options={
                 CONF_THRESHOLD_TYPE: ThresholdType.ABOVE,
                 CONF_LOWER_LIMIT: 10,
+                **trigger_options,
             },
-            target_states=["50", "100"],
-            other_states=["none", "0"],
+            target_states=[("50", unit_attributes), ("100", unit_attributes)],
+            other_states=[("none", unit_attributes), ("0", unit_attributes)],
             required_filter_attributes=required_filter_attributes,
             trigger_from_none=False,
         ),
@@ -730,9 +788,10 @@ def parametrize_numerical_state_value_crossed_threshold_trigger_states(
             trigger_options={
                 CONF_THRESHOLD_TYPE: ThresholdType.BELOW,
                 CONF_UPPER_LIMIT: 90,
+                **trigger_options,
             },
-            target_states=["0", "50"],
-            other_states=["none", "100"],
+            target_states=[("0", unit_attributes), ("50", unit_attributes)],
+            other_states=[("none", unit_attributes), ("100", unit_attributes)],
             required_filter_attributes=required_filter_attributes,
             trigger_from_none=False,
         ),
diff --git a/tests/components/humidity/test_trigger.py b/tests/components/humidity/test_trigger.py
index 9f7d0d16552..1b4a1e6789f 100644
--- a/tests/components/humidity/test_trigger.py
+++ b/tests/components/humidity/test_trigger.py
@@ -11,6 +11,7 @@ from homeassistant.components.climate import (
 from homeassistant.components.humidifier import (
     ATTR_CURRENT_HUMIDITY as HUMIDIFIER_ATTR_CURRENT_HUMIDITY,
 )
+from homeassistant.components.sensor import SensorDeviceClass
 from homeassistant.components.weather import ATTR_WEATHER_HUMIDITY
 from homeassistant.const import ATTR_DEVICE_CLASS, CONF_ENTITY_ID, STATE_ON
 from homeassistant.core import HomeAssistant, ServiceCall
@@ -81,10 +82,10 @@ async def test_humidity_triggers_gated_by_labs_flag(
     ("trigger", "trigger_options", "states"),
     [
         *parametrize_numerical_state_value_changed_trigger_states(
-            "humidity.changed", "humidity"
+            "humidity.changed", device_class=SensorDeviceClass.HUMIDITY
         ),
         *parametrize_numerical_state_value_crossed_threshold_trigger_states(
-            "humidity.crossed_threshold", "humidity"
+            "humidity.crossed_threshold", device_class=SensorDeviceClass.HUMIDITY
         ),
     ],
 )
@@ -122,7 +123,7 @@ async def test_humidity_trigger_sensor_behavior_any(
     ("trigger", "trigger_options", "states"),
     [
         *parametrize_numerical_state_value_crossed_threshold_trigger_states(
-            "humidity.crossed_threshold", "humidity"
+            "humidity.crossed_threshold", device_class=SensorDeviceClass.HUMIDITY
         ),
     ],
 )
@@ -160,7 +161,7 @@ async def test_humidity_trigger_sensor_crossed_threshold_behavior_first(
     ("trigger", "trigger_options", "states"),
     [
         *parametrize_numerical_state_value_crossed_threshold_trigger_states(
-            "humidity.crossed_threshold", "humidity"
+            "humidity.crossed_threshold", device_class=SensorDeviceClass.HUMIDITY
         ),
     ],
 )
diff --git a/tests/components/temperature/__init__.py b/tests/components/temperature/__init__.py
new file mode 100644
index 00000000000..a8811188a9a
--- /dev/null
+++ b/tests/components/temperature/__init__.py
@@ -0,0 +1 @@
+"""Tests for the temperature integration."""
diff --git a/tests/components/temperature/test_trigger.py b/tests/components/temperature/test_trigger.py
new file mode 100644
index 00000000000..c0ae4b4b480
--- /dev/null
+++ b/tests/components/temperature/test_trigger.py
@@ -0,0 +1,931 @@
+"""Test temperature trigger."""
+
+from typing import Any
+
+import pytest
+
+from homeassistant.components.climate import (
+    ATTR_CURRENT_TEMPERATURE as CLIMATE_ATTR_CURRENT_TEMPERATURE,
+    HVACMode,
+)
+from homeassistant.components.sensor import SensorDeviceClass
+from homeassistant.components.water_heater import (
+    ATTR_CURRENT_TEMPERATURE as WATER_HEATER_ATTR_CURRENT_TEMPERATURE,
+)
+from homeassistant.components.weather import (
+    ATTR_WEATHER_TEMPERATURE,
+    ATTR_WEATHER_TEMPERATURE_UNIT,
+)
+from homeassistant.const import (
+    ATTR_DEVICE_CLASS,
+    ATTR_UNIT_OF_MEASUREMENT,
+    CONF_ENTITY_ID,
+    UnitOfTemperature,
+)
+from homeassistant.core import HomeAssistant, ServiceCall
+
+from tests.components.common import (
+    TriggerStateDescription,
+    arm_trigger,
+    assert_trigger_behavior_any,
+    assert_trigger_behavior_first,
+    assert_trigger_behavior_last,
+    assert_trigger_gated_by_labs_flag,
+    parametrize_numerical_attribute_changed_trigger_states,
+    parametrize_numerical_attribute_crossed_threshold_trigger_states,
+    parametrize_numerical_state_value_changed_trigger_states,
+    parametrize_numerical_state_value_crossed_threshold_trigger_states,
+    parametrize_target_entities,
+    target_entities,
+)
+
+_TEMPERATURE_TRIGGER_OPTIONS = {"unit": UnitOfTemperature.CELSIUS}
+_SENSOR_UNIT_ATTRIBUTES = {
+    ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.CELSIUS,
+}
+_WEATHER_UNIT_ATTRIBUTES = {
+    ATTR_WEATHER_TEMPERATURE_UNIT: UnitOfTemperature.CELSIUS,
+}
+
+
+@pytest.fixture
+async def target_sensors(hass: HomeAssistant) -> dict[str, list[str]]:
+    """Create multiple sensor entities associated with different targets."""
+    return await target_entities(hass, "sensor")
+
+
+@pytest.fixture
+async def target_climates(hass: HomeAssistant) -> dict[str, list[str]]:
+    """Create multiple climate entities associated with different targets."""
+    return await target_entities(hass, "climate")
+
+
+@pytest.fixture
+async def target_water_heaters(hass: HomeAssistant) -> dict[str, list[str]]:
+    """Create multiple water_heater entities associated with different targets."""
+    return await target_entities(hass, "water_heater")
+
+
+@pytest.fixture
+async def target_weathers(hass: HomeAssistant) -> dict[str, list[str]]:
+    """Create multiple weather entities associated with different targets."""
+    return await target_entities(hass, "weather")
+
+
+@pytest.mark.parametrize(
+    "trigger_key",
+    [
+        "temperature.changed",
+        "temperature.crossed_threshold",
+    ],
+)
+async def test_temperature_triggers_gated_by_labs_flag(
+    hass: HomeAssistant, caplog: pytest.LogCaptureFixture, trigger_key: str
+) -> None:
+    """Test the temperature triggers are gated by the labs flag."""
+    await assert_trigger_gated_by_labs_flag(hass, caplog, trigger_key)
+
+
+# --- Sensor domain tests (value in state.state) ---
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("sensor"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_state_value_changed_trigger_states(
+            "temperature.changed",
+            device_class=SensorDeviceClass.TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+            unit_attributes=_SENSOR_UNIT_ATTRIBUTES,
+        ),
+        *parametrize_numerical_state_value_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            device_class=SensorDeviceClass.TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+            unit_attributes=_SENSOR_UNIT_ATTRIBUTES,
+        ),
+    ],
+)
+async def test_temperature_trigger_sensor_behavior_any(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_sensors: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature trigger fires for sensor entities with device_class temperature."""
+    await assert_trigger_behavior_any(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_sensors,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("sensor"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_state_value_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            device_class=SensorDeviceClass.TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+            unit_attributes=_SENSOR_UNIT_ATTRIBUTES,
+        ),
+    ],
+)
+async def test_temperature_trigger_sensor_crossed_threshold_behavior_first(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_sensors: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature crossed_threshold trigger fires on the first sensor state change."""
+    await assert_trigger_behavior_first(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_sensors,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("sensor"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_state_value_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            device_class=SensorDeviceClass.TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+            unit_attributes=_SENSOR_UNIT_ATTRIBUTES,
+        ),
+    ],
+)
+async def test_temperature_trigger_sensor_crossed_threshold_behavior_last(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_sensors: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature crossed_threshold trigger fires when the last sensor changes state."""
+    await assert_trigger_behavior_last(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_sensors,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+# --- Climate domain tests (value in current_temperature attribute) ---
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("climate"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_attribute_changed_trigger_states(
+            "temperature.changed",
+            HVACMode.AUTO,
+            CLIMATE_ATTR_CURRENT_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+        ),
+        *parametrize_numerical_attribute_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            HVACMode.AUTO,
+            CLIMATE_ATTR_CURRENT_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+        ),
+    ],
+)
+async def test_temperature_trigger_climate_behavior_any(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_climates: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature trigger fires for climate entities."""
+    await assert_trigger_behavior_any(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_climates,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("climate"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_attribute_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            HVACMode.AUTO,
+            CLIMATE_ATTR_CURRENT_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+        ),
+    ],
+)
+async def test_temperature_trigger_climate_crossed_threshold_behavior_first(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_climates: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature crossed_threshold trigger fires on the first climate state change."""
+    await assert_trigger_behavior_first(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_climates,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("climate"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_attribute_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            HVACMode.AUTO,
+            CLIMATE_ATTR_CURRENT_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+        ),
+    ],
+)
+async def test_temperature_trigger_climate_crossed_threshold_behavior_last(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_climates: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature crossed_threshold trigger fires when the last climate changes state."""
+    await assert_trigger_behavior_last(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_climates,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+# --- Water heater domain tests (value in current_temperature attribute) ---
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("water_heater"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_attribute_changed_trigger_states(
+            "temperature.changed",
+            "eco",
+            WATER_HEATER_ATTR_CURRENT_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+        ),
+        *parametrize_numerical_attribute_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            "eco",
+            WATER_HEATER_ATTR_CURRENT_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+        ),
+    ],
+)
+async def test_temperature_trigger_water_heater_behavior_any(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_water_heaters: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature trigger fires for water_heater entities."""
+    await assert_trigger_behavior_any(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_water_heaters,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("water_heater"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_attribute_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            "eco",
+            WATER_HEATER_ATTR_CURRENT_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+        ),
+    ],
+)
+async def test_temperature_trigger_water_heater_crossed_threshold_behavior_first(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_water_heaters: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature crossed_threshold trigger fires on the first water_heater state change."""
+    await assert_trigger_behavior_first(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_water_heaters,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("water_heater"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_attribute_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            "eco",
+            WATER_HEATER_ATTR_CURRENT_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+        ),
+    ],
+)
+async def test_temperature_trigger_water_heater_crossed_threshold_behavior_last(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_water_heaters: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature crossed_threshold trigger fires when the last water_heater changes state."""
+    await assert_trigger_behavior_last(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_water_heaters,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+# --- Weather domain tests (value in temperature attribute) ---
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("weather"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_attribute_changed_trigger_states(
+            "temperature.changed",
+            "sunny",
+            ATTR_WEATHER_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+            unit_attributes=_WEATHER_UNIT_ATTRIBUTES,
+        ),
+        *parametrize_numerical_attribute_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            "sunny",
+            ATTR_WEATHER_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+            unit_attributes=_WEATHER_UNIT_ATTRIBUTES,
+        ),
+    ],
+)
+async def test_temperature_trigger_weather_behavior_any(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_weathers: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature trigger fires for weather entities."""
+    await assert_trigger_behavior_any(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_weathers,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("weather"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_attribute_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            "sunny",
+            ATTR_WEATHER_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+            unit_attributes=_WEATHER_UNIT_ATTRIBUTES,
+        ),
+    ],
+)
+async def test_temperature_trigger_weather_crossed_threshold_behavior_first(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_weathers: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature crossed_threshold trigger fires on the first weather state change."""
+    await assert_trigger_behavior_first(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_weathers,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    ("trigger_target_config", "entity_id", "entities_in_target"),
+    parametrize_target_entities("weather"),
+)
+@pytest.mark.parametrize(
+    ("trigger", "trigger_options", "states"),
+    [
+        *parametrize_numerical_attribute_crossed_threshold_trigger_states(
+            "temperature.crossed_threshold",
+            "sunny",
+            ATTR_WEATHER_TEMPERATURE,
+            trigger_options=_TEMPERATURE_TRIGGER_OPTIONS,
+            unit_attributes=_WEATHER_UNIT_ATTRIBUTES,
+        ),
+    ],
+)
+async def test_temperature_trigger_weather_crossed_threshold_behavior_last(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    target_weathers: dict[str, list[str]],
+    trigger_target_config: dict,
+    entity_id: str,
+    entities_in_target: int,
+    trigger: str,
+    trigger_options: dict[str, Any],
+    states: list[TriggerStateDescription],
+) -> None:
+    """Test temperature crossed_threshold trigger fires when the last weather changes state."""
+    await assert_trigger_behavior_last(
+        hass,
+        service_calls=service_calls,
+        target_entities=target_weathers,
+        trigger_target_config=trigger_target_config,
+        entity_id=entity_id,
+        entities_in_target=entities_in_target,
+        trigger=trigger,
+        trigger_options=trigger_options,
+        states=states,
+    )
+
+
+# --- Device class exclusion test ---
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+@pytest.mark.parametrize(
+    (
+        "trigger_key",
+        "trigger_options",
+        "sensor_initial",
+        "sensor_target",
+    ),
+    [
+        (
+            "temperature.changed",
+            {},
+            "20",
+            "25",
+        ),
+        (
+            "temperature.crossed_threshold",
+            {"threshold_type": "above", "lower_limit": 10, "unit": "°C"},
+            "5",
+            "20",
+        ),
+    ],
+)
+async def test_temperature_trigger_excludes_non_temperature_sensor(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+    trigger_key: str,
+    trigger_options: dict[str, Any],
+    sensor_initial: str,
+    sensor_target: str,
+) -> None:
+    """Test temperature trigger does not fire for sensor entities without device_class temperature."""
+    entity_id_temperature = "sensor.test_temperature"
+    entity_id_humidity = "sensor.test_humidity"
+
+    temp_attrs = {
+        ATTR_DEVICE_CLASS: "temperature",
+        ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.CELSIUS,
+    }
+    humidity_attrs = {ATTR_DEVICE_CLASS: "humidity"}
+
+    # Set initial states
+    hass.states.async_set(entity_id_temperature, sensor_initial, temp_attrs)
+    hass.states.async_set(entity_id_humidity, sensor_initial, humidity_attrs)
+    await hass.async_block_till_done()
+
+    await arm_trigger(
+        hass,
+        trigger_key,
+        trigger_options,
+        {
+            CONF_ENTITY_ID: [
+                entity_id_temperature,
+                entity_id_humidity,
+            ]
+        },
+    )
+
+    # Temperature sensor changes - should trigger
+    hass.states.async_set(entity_id_temperature, sensor_target, temp_attrs)
+    await hass.async_block_till_done()
+    assert len(service_calls) == 1
+    assert service_calls[0].data[CONF_ENTITY_ID] == entity_id_temperature
+    service_calls.clear()
+
+    # Humidity sensor changes - should NOT trigger (wrong device class)
+    hass.states.async_set(entity_id_humidity, sensor_target, humidity_attrs)
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+
+# --- Unit conversion tests ---
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+async def test_temperature_trigger_unit_conversion_sensor_celsius_to_fahrenheit(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+) -> None:
+    """Test temperature trigger converts sensor value from °C to °F for threshold comparison."""
+    entity_id = "sensor.test_temp"
+
+    # Sensor reports in °C, trigger configured in °F with threshold above 70°F
+    hass.states.async_set(
+        entity_id,
+        "20",
+        {
+            ATTR_DEVICE_CLASS: "temperature",
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.CELSIUS,
+        },
+    )
+    await hass.async_block_till_done()
+
+    await arm_trigger(
+        hass,
+        "temperature.crossed_threshold",
+        {
+            "threshold_type": "above",
+            "lower_limit": 70,
+            "unit": "°F",
+        },
+        {CONF_ENTITY_ID: [entity_id]},
+    )
+
+    # 20°C = 68°F, which is below 70°F - should NOT trigger
+    hass.states.async_set(
+        entity_id,
+        "20",
+        {
+            ATTR_DEVICE_CLASS: "temperature",
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.CELSIUS,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # 22°C = 71.6°F, which is above 70°F - should trigger
+    hass.states.async_set(
+        entity_id,
+        "22",
+        {
+            ATTR_DEVICE_CLASS: "temperature",
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.CELSIUS,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 1
+    service_calls.clear()
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+async def test_temperature_trigger_unit_conversion_sensor_fahrenheit_to_celsius(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+) -> None:
+    """Test temperature trigger converts sensor value from °F to °C for threshold comparison."""
+    entity_id = "sensor.test_temp"
+
+    # Sensor reports in °F, trigger configured in °C with threshold above 25°C
+    hass.states.async_set(
+        entity_id,
+        "70",
+        {
+            ATTR_DEVICE_CLASS: "temperature",
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+
+    await arm_trigger(
+        hass,
+        "temperature.crossed_threshold",
+        {
+            "threshold_type": "above",
+            "lower_limit": 25,
+            "unit": "°C",
+        },
+        {CONF_ENTITY_ID: [entity_id]},
+    )
+
+    # 70°F = 21.1°C, which is below 25°C - should NOT trigger
+    hass.states.async_set(
+        entity_id,
+        "70",
+        {
+            ATTR_DEVICE_CLASS: "temperature",
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # 80°F = 26.7°C, which is above 25°C - should trigger
+    hass.states.async_set(
+        entity_id,
+        "80",
+        {
+            ATTR_DEVICE_CLASS: "temperature",
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 1
+    service_calls.clear()
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+async def test_temperature_trigger_unit_conversion_changed(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+) -> None:
+    """Test temperature changed trigger with unit conversion and above/below limits."""
+    entity_id = "sensor.test_temp"
+
+    # Sensor reports in °C, trigger configured in °F: above 68°F (20°C), below 77°F (25°C)
+    hass.states.async_set(
+        entity_id,
+        "18",
+        {
+            ATTR_DEVICE_CLASS: "temperature",
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.CELSIUS,
+        },
+    )
+    await hass.async_block_till_done()
+
+    await arm_trigger(
+        hass,
+        "temperature.changed",
+        {
+            "above": 68,
+            "below": 77,
+            "unit": "°F",
+        },
+        {CONF_ENTITY_ID: [entity_id]},
+    )
+
+    # 18°C = 64.4°F, below 68°F - should NOT trigger
+    hass.states.async_set(
+        entity_id,
+        "19",
+        {
+            ATTR_DEVICE_CLASS: "temperature",
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.CELSIUS,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # 22°C = 71.6°F, between 68°F and 77°F - should trigger
+    hass.states.async_set(
+        entity_id,
+        "22",
+        {
+            ATTR_DEVICE_CLASS: "temperature",
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.CELSIUS,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 1
+    service_calls.clear()
+
+    # 26°C = 78.8°F, above 77°F - should NOT trigger
+    hass.states.async_set(
+        entity_id,
+        "26",
+        {
+            ATTR_DEVICE_CLASS: "temperature",
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.CELSIUS,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+
+@pytest.mark.usefixtures("enable_labs_preview_features")
+async def test_temperature_trigger_unit_conversion_weather(
+    hass: HomeAssistant,
+    service_calls: list[ServiceCall],
+) -> None:
+    """Test temperature trigger with unit conversion for weather entities."""
+    entity_id = "weather.test"
+
+    # Weather reports temperature in °F, trigger configured in °C with threshold above 25°C
+    hass.states.async_set(
+        entity_id,
+        "sunny",
+        {
+            ATTR_WEATHER_TEMPERATURE: 70,
+            ATTR_WEATHER_TEMPERATURE_UNIT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+
+    await arm_trigger(
+        hass,
+        "temperature.crossed_threshold",
+        {
+            "threshold_type": "above",
+            "lower_limit": 25,
+            "unit": "°C",
+        },
+        {CONF_ENTITY_ID: [entity_id]},
+    )
+
+    # 70°F = 21.1°C, below 25°C - should NOT trigger
+    hass.states.async_set(
+        entity_id,
+        "sunny",
+        {
+            ATTR_WEATHER_TEMPERATURE: 70,
+            ATTR_WEATHER_TEMPERATURE_UNIT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # 80°F = 26.7°C, above 25°C - should trigger
+    hass.states.async_set(
+        entity_id,
+        "sunny",
+        {
+            ATTR_WEATHER_TEMPERATURE: 80,
+            ATTR_WEATHER_TEMPERATURE_UNIT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 1
+    service_calls.clear()
diff --git a/tests/helpers/test_trigger.py b/tests/helpers/test_trigger.py
index a0905cd8267..ddb45ba90a1 100644
--- a/tests/helpers/test_trigger.py
+++ b/tests/helpers/test_trigger.py
@@ -17,6 +17,7 @@ from homeassistant.components.tag import DOMAIN as TAG_DOMAIN
 from homeassistant.components.text import DOMAIN as TEXT_DOMAIN
 from homeassistant.const import (
     ATTR_DEVICE_CLASS,
+    ATTR_UNIT_OF_MEASUREMENT,
     CONF_ABOVE,
     CONF_BELOW,
     CONF_ENTITY_ID,
@@ -25,6 +26,7 @@ from homeassistant.const import (
     CONF_TARGET,
     STATE_UNAVAILABLE,
     STATE_UNKNOWN,
+    UnitOfTemperature,
 )
 from homeassistant.core import (
     CALLBACK_TYPE,
@@ -45,8 +47,11 @@ from homeassistant.helpers.automation import (
 from homeassistant.helpers.trigger import (
     CONF_LOWER_LIMIT,
     CONF_THRESHOLD_TYPE,
+    CONF_UNIT,
     CONF_UPPER_LIMIT,
     DATA_PLUGGABLE_ACTIONS,
+    EntityNumericalStateChangedTriggerWithUnitBase,
+    EntityNumericalStateCrossedThresholdTriggerWithUnitBase,
     EntityTriggerBase,
     PluggableAction,
     Trigger,
@@ -64,6 +69,7 @@ from homeassistant.helpers.trigger import (
 from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import Integration, async_get_integration
 from homeassistant.setup import async_setup_component
+from homeassistant.util.unit_conversion import TemperatureConverter
 from homeassistant.util.yaml.loader import parse_yaml
 
 from tests.common import MockModule, MockPlatform, mock_integration, mock_platform
@@ -1174,31 +1180,38 @@ async def test_subscribe_triggers_no_triggers(
     ("trigger_options", "expected_result"),
     [
         # Test validating climate.target_temperature_changed
-        # Valid configurations
+        # Valid: no limits at all
         (
             {},
             does_not_raise(),
         ),
+        # Valid: numerical limits
         (
             {CONF_ABOVE: 10},
             does_not_raise(),
         ),
-        (
-            {CONF_ABOVE: "sensor.test"},
-            does_not_raise(),
-        ),
         (
             {CONF_BELOW: 90},
             does_not_raise(),
         ),
+        (
+            {CONF_ABOVE: 10, CONF_BELOW: 90},
+            does_not_raise(),
+        ),
+        # Valid: entity references
+        (
+            {CONF_ABOVE: "sensor.test"},
+            does_not_raise(),
+        ),
         (
             {CONF_BELOW: "sensor.test"},
             does_not_raise(),
         ),
         (
-            {CONF_ABOVE: 10, CONF_BELOW: 90},
+            {CONF_ABOVE: "sensor.test", CONF_BELOW: "sensor.test"},
             does_not_raise(),
         ),
+        # Valid: Mix of numerical limits and entity references
         (
             {CONF_ABOVE: "sensor.test", CONF_BELOW: 90},
             does_not_raise(),
@@ -1207,10 +1220,6 @@ async def test_subscribe_triggers_no_triggers(
             {CONF_ABOVE: 10, CONF_BELOW: "sensor.test"},
             does_not_raise(),
         ),
-        (
-            {CONF_ABOVE: "sensor.test", CONF_BELOW: "sensor.test"},
-            does_not_raise(),
-        ),
         # Test verbose choose selector options
         (
             {CONF_ABOVE: {"active_choice": "entity", "entity": "sensor.test"}},
@@ -1276,6 +1285,147 @@ async def test_numerical_state_attribute_changed_trigger_config_validation(
         )
 
 
+def _make_with_unit_changed_trigger_class() -> type[
+    EntityNumericalStateChangedTriggerWithUnitBase
+]:
+    """Create a concrete WithUnit changed trigger class for testing."""
+
+    class _TestChangedTrigger(
+        EntityNumericalStateChangedTriggerWithUnitBase,
+    ):
+        _base_unit = UnitOfTemperature.CELSIUS
+        _domain_specs = {"test": NumericalDomainSpec(value_source="test_attribute")}
+        _unit_converter = TemperatureConverter
+
+    return _TestChangedTrigger
+
+
+@pytest.mark.parametrize(
+    ("trigger_options", "expected_result"),
+    [
+        # Valid: no limits at all
+        (
+            {},
+            does_not_raise(),
+        ),
+        # Valid: unit provided with numerical limits
+        (
+            {CONF_ABOVE: 10, CONF_UNIT: UnitOfTemperature.CELSIUS},
+            does_not_raise(),
+        ),
+        (
+            {CONF_BELOW: 90, CONF_UNIT: UnitOfTemperature.FAHRENHEIT},
+            does_not_raise(),
+        ),
+        (
+            {
+                CONF_ABOVE: 10,
+                CONF_BELOW: 90,
+                CONF_UNIT: UnitOfTemperature.CELSIUS,
+            },
+            does_not_raise(),
+        ),
+        # Valid: no unit needed when using entity references
+        (
+            {CONF_ABOVE: "sensor.test"},
+            does_not_raise(),
+        ),
+        (
+            {CONF_BELOW: "sensor.test"},
+            does_not_raise(),
+        ),
+        (
+            {CONF_ABOVE: "sensor.test", CONF_BELOW: "sensor.test"},
+            does_not_raise(),
+        ),
+        # Valid: unit only needed for numerical limits, not entity references
+        (
+            {
+                CONF_ABOVE: "sensor.test",
+                CONF_BELOW: 90,
+                CONF_UNIT: UnitOfTemperature.CELSIUS,
+            },
+            does_not_raise(),
+        ),
+        (
+            {
+                CONF_ABOVE: 10,
+                CONF_BELOW: "sensor.test",
+                CONF_UNIT: UnitOfTemperature.CELSIUS,
+            },
+            does_not_raise(),
+        ),
+        # Invalid: numerical limit without unit
+        (
+            {CONF_ABOVE: 10},
+            pytest.raises(vol.Invalid),
+        ),
+        (
+            {CONF_BELOW: 90},
+            pytest.raises(vol.Invalid),
+        ),
+        (
+            {CONF_ABOVE: 10, CONF_BELOW: 90},
+            pytest.raises(vol.Invalid),
+        ),
+        # Invalid: one numerical limit without unit (other is entity)
+        (
+            {CONF_ABOVE: 10, CONF_BELOW: "sensor.test"},
+            pytest.raises(vol.Invalid),
+        ),
+        (
+            {CONF_ABOVE: "sensor.test", CONF_BELOW: 90},
+            pytest.raises(vol.Invalid),
+        ),
+        # Invalid: invalid unit value
+        (
+            {CONF_ABOVE: 10, CONF_UNIT: "invalid_unit"},
+            pytest.raises(vol.Invalid),
+        ),
+        # Invalid: Must use valid entity id
+        (
+            {CONF_ABOVE: "cat", CONF_BELOW: "dog"},
+            pytest.raises(vol.Invalid),
+        ),
+        # Invalid: above must be smaller than below
+        (
+            {CONF_ABOVE: 90, CONF_BELOW: 10, CONF_UNIT: UnitOfTemperature.CELSIUS},
+            pytest.raises(vol.Invalid),
+        ),
+        # Invalid: invalid choose selector option
+        (
+            {CONF_BELOW: {"active_choice": "cat", "cat": 90}},
+            pytest.raises(vol.Invalid),
+        ),
+    ],
+)
+async def test_numerical_state_attribute_changed_with_unit_trigger_config_validation(
+    hass: HomeAssistant,
+    trigger_options: dict[str, Any],
+    expected_result: AbstractContextManager,
+) -> None:
+    """Test numerical state attribute change with unit trigger config validation."""
+    trigger_cls = _make_with_unit_changed_trigger_class()
+
+    async def async_get_triggers(hass: HomeAssistant) -> dict[str, type[Trigger]]:
+        return {"test_trigger": trigger_cls}
+
+    mock_integration(hass, MockModule("test"))
+    mock_platform(hass, "test.trigger", Mock(async_get_triggers=async_get_triggers))
+
+    with expected_result:
+        await async_validate_trigger_config(
+            hass,
+            [
+                {
+                    "platform": "test.test_trigger",
+                    CONF_TARGET: {CONF_ENTITY_ID: "test.test_entity"},
+                    CONF_OPTIONS: trigger_options,
+                }
+            ],
+        )
+
+
 async def test_numerical_state_attribute_changed_error_handling(
     hass: HomeAssistant, service_calls: list[ServiceCall]
 ) -> None:
@@ -1389,6 +1539,302 @@ async def test_numerical_state_attribute_changed_error_handling(
         assert len(service_calls) == 0
 
 
+async def test_numerical_state_attribute_changed_with_unit_error_handling(
+    hass: HomeAssistant, service_calls: list[ServiceCall]
+) -> None:
+    """Test numerical state attribute change with unit conversion error handling."""
+    trigger_cls = _make_with_unit_changed_trigger_class()
+
+    async def async_get_triggers(hass: HomeAssistant) -> dict[str, type[Trigger]]:
+        return {"attribute_changed": trigger_cls}
+
+    mock_integration(hass, MockModule("test"))
+    mock_platform(hass, "test.trigger", Mock(async_get_triggers=async_get_triggers))
+
+    # Entity reports in °F, trigger configured in °C with above 20°C, below 30°C
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 68,  # 68°F = 20°C
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+
+    await async_setup_component(
+        hass,
+        automation.DOMAIN,
+        {
+            automation.DOMAIN: [
+                {
+                    "trigger": {
+                        CONF_PLATFORM: "test.attribute_changed",
+                        CONF_TARGET: {CONF_ENTITY_ID: "test.test_entity"},
+                        CONF_OPTIONS: {
+                            CONF_ABOVE: 20,
+                            CONF_BELOW: 30,
+                            CONF_UNIT: UnitOfTemperature.CELSIUS,
+                        },
+                    },
+                    "action": {
+                        "service": "test.numerical_automation",
+                        "data_template": {CONF_ENTITY_ID: "{{ trigger.entity_id }}"},
+                    },
+                },
+                {
+                    "trigger": {
+                        CONF_PLATFORM: "test.attribute_changed",
+                        CONF_TARGET: {CONF_ENTITY_ID: "test.test_entity"},
+                        CONF_OPTIONS: {
+                            CONF_ABOVE: "sensor.above",
+                            CONF_BELOW: "sensor.below",
+                        },
+                    },
+                    "action": {
+                        "service": "test.entity_automation",
+                        "data_template": {CONF_ENTITY_ID: "{{ trigger.entity_id }}"},
+                    },
+                },
+            ]
+        },
+    )
+
+    assert len(service_calls) == 0
+
+    # 77°F = 25°C, within range (above 20, below 30) - should trigger numerical
+    # Entity automation won't trigger because sensor.above/below don't exist yet
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 77,
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 1
+    assert service_calls[0].service == "numerical_automation"
+    service_calls.clear()
+
+    # 59°F = 15°C, below 20°C - should NOT trigger
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 59,
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # 95°F = 35°C, above 30°C - should NOT trigger
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 95,
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # Set up entity limits referencing sensors that report in °F
+    hass.states.async_set(
+        "sensor.above",
+        "68",  # 68°F = 20°C
+        {ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT},
+    )
+    hass.states.async_set(
+        "sensor.below",
+        "86",  # 86°F = 30°C
+        {ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT},
+    )
+
+    # 77°F = 25°C, between 20°C and 30°C - should trigger both automations
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 77,
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 2
+    assert {call.service for call in service_calls} == {
+        "numerical_automation",
+        "entity_automation",
+    }
+    service_calls.clear()
+
+    # Test the trigger does not fire when the attribute value is missing
+    hass.states.async_set("test.test_entity", "on", {})
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the attribute value is invalid
+    for value in ("cat", None):
+        hass.states.async_set(
+            "test.test_entity",
+            "on",
+            {
+                "test_attribute": value,
+                ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+            },
+        )
+        await hass.async_block_till_done()
+        assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the unit is incompatible
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 50,
+            ATTR_UNIT_OF_MEASUREMENT: "invalid_unit",
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the above sensor does not exist
+    hass.states.async_remove("sensor.above")
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": None,
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {"test_attribute": 50, ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT},
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the above sensor state is not numeric
+    for invalid_value in ("cat", None):
+        hass.states.async_set(
+            "sensor.above",
+            invalid_value,
+            {ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT},
+        )
+        hass.states.async_set(
+            "test.test_entity",
+            "on",
+            {
+                "test_attribute": None,
+                ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+            },
+        )
+        hass.states.async_set(
+            "test.test_entity",
+            "on",
+            {
+                "test_attribute": 50,
+                ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+            },
+        )
+        await hass.async_block_till_done()
+        assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the above sensor's unit is incompatible
+    hass.states.async_set(
+        "sensor.above",
+        "68",  # 68°F = 20°C
+        {ATTR_UNIT_OF_MEASUREMENT: "invalid_unit"},
+    )
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": None,
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {"test_attribute": 50, ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT},
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # Reset the above sensor state to a valid numeric value
+    hass.states.async_set(
+        "sensor.above",
+        "68",  # 68°F = 20°C
+        {ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT},
+    )
+
+    # Test the trigger does not fire when the below sensor does not exist
+    hass.states.async_remove("sensor.below")
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": None,
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {"test_attribute": 50, ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT},
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the below sensor state is not numeric
+    for invalid_value in ("cat", None):
+        hass.states.async_set("sensor.below", invalid_value)
+        hass.states.async_set(
+            "test.test_entity",
+            "on",
+            {
+                "test_attribute": None,
+                ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+            },
+        )
+        hass.states.async_set(
+            "test.test_entity",
+            "on",
+            {
+                "test_attribute": 50,
+                ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+            },
+        )
+        await hass.async_block_till_done()
+        assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the below sensor's unit is incompatible
+    hass.states.async_set(
+        "sensor.below",
+        "68",  # 68°F = 20°C
+        {ATTR_UNIT_OF_MEASUREMENT: "invalid_unit"},
+    )
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": None,
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {"test_attribute": 50, ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT},
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+
 @pytest.mark.parametrize(
     ("trigger_options", "expected_result"),
     [
@@ -1586,6 +2032,367 @@ async def test_numerical_state_attribute_crossed_threshold_trigger_config_valida
         )
 
 
+def _make_with_unit_crossed_threshold_trigger_class() -> type[
+    EntityNumericalStateCrossedThresholdTriggerWithUnitBase
+]:
+    """Create a concrete WithUnit crossed threshold trigger class for testing."""
+
+    class _TestCrossedThresholdTrigger(
+        EntityNumericalStateCrossedThresholdTriggerWithUnitBase,
+    ):
+        _base_unit = UnitOfTemperature.CELSIUS
+        _domain_specs = {"test": NumericalDomainSpec(value_source="test_attribute")}
+        _unit_converter = TemperatureConverter
+
+    return _TestCrossedThresholdTrigger
+
+
+@pytest.mark.parametrize(
+    ("trigger_options", "expected_result"),
+    [
+        # Valid: unit provided with numerical limits
+        (
+            {
+                CONF_THRESHOLD_TYPE: "above",
+                CONF_LOWER_LIMIT: 10,
+                CONF_UNIT: UnitOfTemperature.CELSIUS,
+            },
+            does_not_raise(),
+        ),
+        (
+            {
+                CONF_THRESHOLD_TYPE: "below",
+                CONF_UPPER_LIMIT: 90,
+                CONF_UNIT: UnitOfTemperature.FAHRENHEIT,
+            },
+            does_not_raise(),
+        ),
+        (
+            {
+                CONF_THRESHOLD_TYPE: "between",
+                CONF_LOWER_LIMIT: 10,
+                CONF_UPPER_LIMIT: 90,
+                CONF_UNIT: UnitOfTemperature.CELSIUS,
+            },
+            does_not_raise(),
+        ),
+        # Valid: no unit needed when using entity references
+        (
+            {
+                CONF_THRESHOLD_TYPE: "above",
+                CONF_LOWER_LIMIT: "sensor.test",
+            },
+            does_not_raise(),
+        ),
+        (
+            {
+                CONF_THRESHOLD_TYPE: "between",
+                CONF_LOWER_LIMIT: "sensor.test",
+                CONF_UPPER_LIMIT: "sensor.test",
+            },
+            does_not_raise(),
+        ),
+        # Invalid: numerical limit without unit
+        (
+            {CONF_THRESHOLD_TYPE: "above", CONF_LOWER_LIMIT: 10},
+            pytest.raises(vol.Invalid),
+        ),
+        (
+            {
+                CONF_THRESHOLD_TYPE: "between",
+                CONF_LOWER_LIMIT: 10,
+                CONF_UPPER_LIMIT: 90,
+            },
+            pytest.raises(vol.Invalid),
+        ),
+        # Invalid: one numerical limit without unit (other is entity)
+        (
+            {
+                CONF_THRESHOLD_TYPE: "between",
+                CONF_LOWER_LIMIT: 10,
+                CONF_UPPER_LIMIT: "sensor.test",
+            },
+            pytest.raises(vol.Invalid),
+        ),
+        # Invalid: invalid unit value
+        (
+            {
+                CONF_THRESHOLD_TYPE: "above",
+                CONF_LOWER_LIMIT: 10,
+                CONF_UNIT: "invalid_unit",
+            },
+            pytest.raises(vol.Invalid),
+        ),
+        # Invalid: missing threshold type (shared validation)
+        (
+            {},
+            pytest.raises(vol.Invalid),
+        ),
+    ],
+)
+async def test_numerical_state_attribute_crossed_threshold_with_unit_trigger_config_validation(
+    hass: HomeAssistant,
+    trigger_options: dict[str, Any],
+    expected_result: AbstractContextManager,
+) -> None:
+    """Test numerical state attribute crossed threshold with unit trigger config validation."""
+    trigger_cls = _make_with_unit_crossed_threshold_trigger_class()
+
+    async def async_get_triggers(hass: HomeAssistant) -> dict[str, type[Trigger]]:
+        return {"test_trigger": trigger_cls}
+
+    mock_integration(hass, MockModule("test"))
+    mock_platform(hass, "test.trigger", Mock(async_get_triggers=async_get_triggers))
+
+    with expected_result:
+        await async_validate_trigger_config(
+            hass,
+            [
+                {
+                    "platform": "test.test_trigger",
+                    CONF_TARGET: {CONF_ENTITY_ID: "test.test_entity"},
+                    CONF_OPTIONS: trigger_options,
+                }
+            ],
+        )
+
+
+async def test_numerical_state_attribute_crossed_threshold_error_handling(
+    hass: HomeAssistant, service_calls: list[ServiceCall]
+) -> None:
+    """Test numerical state attribute crossed threshold error handling."""
+
+    async def async_get_triggers(hass: HomeAssistant) -> dict[str, type[Trigger]]:
+        return {
+            "crossed_threshold": make_entity_numerical_state_crossed_threshold_trigger(
+                {"test": NumericalDomainSpec(value_source="test_attribute")}
+            ),
+        }
+
+    mock_integration(hass, MockModule("test"))
+    mock_platform(hass, "test.trigger", Mock(async_get_triggers=async_get_triggers))
+
+    hass.states.async_set("test.test_entity", "on", {"test_attribute": 0})
+
+    options = {
+        CONF_OPTIONS: {
+            CONF_THRESHOLD_TYPE: "between",
+            CONF_LOWER_LIMIT: "sensor.lower",
+            CONF_UPPER_LIMIT: "sensor.upper",
+        },
+    }
+
+    await async_setup_component(
+        hass,
+        automation.DOMAIN,
+        {
+            automation.DOMAIN: {
+                "trigger": {
+                    CONF_PLATFORM: "test.crossed_threshold",
+                    CONF_TARGET: {CONF_ENTITY_ID: "test.test_entity"},
+                }
+                | options,
+                "action": {
+                    "service": "test.automation",
+                    "data_template": {CONF_ENTITY_ID: "{{ trigger.entity_id }}"},
+                },
+            }
+        },
+    )
+
+    assert len(service_calls) == 0
+
+    # Test the trigger works
+    hass.states.async_set("sensor.lower", "10")
+    hass.states.async_set("sensor.upper", "90")
+    hass.states.async_set("test.test_entity", "on", {"test_attribute": 50})
+    await hass.async_block_till_done()
+    assert len(service_calls) == 1
+    service_calls.clear()
+
+    # Test the trigger does not fire again when still within limits
+    hass.states.async_set("test.test_entity", "on", {"test_attribute": 51})
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+    service_calls.clear()
+
+    # Test the trigger does not fire when the from-state is unknown or unavailable
+    for from_state in (STATE_UNKNOWN, STATE_UNAVAILABLE):
+        hass.states.async_set("test.test_entity", from_state)
+        hass.states.async_set("test.test_entity", "on", {"test_attribute": 50})
+        await hass.async_block_till_done()
+        assert len(service_calls) == 0
+
+    # Test the trigger does fire when the attribute value is changing from None
+    hass.states.async_set("test.test_entity", "on", {"test_attribute": None})
+    hass.states.async_set("test.test_entity", "on", {"test_attribute": 50})
+    await hass.async_block_till_done()
+    assert len(service_calls) == 1
+    service_calls.clear()
+
+    # Test the trigger does not fire when the attribute value is outside the limits
+    for value in (5, 95):
+        hass.states.async_set("test.test_entity", "on", {"test_attribute": value})
+        await hass.async_block_till_done()
+        assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the attribute value is missing
+    hass.states.async_set("test.test_entity", "on", {})
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the attribute value is invalid
+    for value in ("cat", None):
+        hass.states.async_set("test.test_entity", "on", {"test_attribute": value})
+        await hass.async_block_till_done()
+        assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the lower sensor does not exist
+    hass.states.async_remove("sensor.lower")
+    hass.states.async_set("test.test_entity", "on", {"test_attribute": None})
+    hass.states.async_set("test.test_entity", "on", {"test_attribute": 50})
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the lower sensor state is not numeric
+    for invalid_value in ("cat", None):
+        hass.states.async_set("sensor.lower", invalid_value)
+        hass.states.async_set("test.test_entity", "on", {"test_attribute": None})
+        hass.states.async_set("test.test_entity", "on", {"test_attribute": 50})
+        await hass.async_block_till_done()
+        assert len(service_calls) == 0
+
+    # Reset the lower sensor state to a valid numeric value
+    hass.states.async_set("sensor.lower", "10")
+
+    # Test the trigger does not fire when the upper sensor does not exist
+    hass.states.async_remove("sensor.upper")
+    hass.states.async_set("test.test_entity", "on", {"test_attribute": None})
+    hass.states.async_set("test.test_entity", "on", {"test_attribute": 50})
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # Test the trigger does not fire when the upper sensor state is not numeric
+    for invalid_value in ("cat", None):
+        hass.states.async_set("sensor.upper", invalid_value)
+        hass.states.async_set("test.test_entity", "on", {"test_attribute": None})
+        hass.states.async_set("test.test_entity", "on", {"test_attribute": 50})
+        await hass.async_block_till_done()
+        assert len(service_calls) == 0
+
+
+async def test_numerical_state_attribute_crossed_threshold_with_unit_error_handling(
+    hass: HomeAssistant, service_calls: list[ServiceCall]
+) -> None:
+    """Test numerical state attribute crossed threshold with unit conversion."""
+    trigger_cls = _make_with_unit_crossed_threshold_trigger_class()
+
+    async def async_get_triggers(hass: HomeAssistant) -> dict[str, type[Trigger]]:
+        return {"crossed_threshold": trigger_cls}
+
+    mock_integration(hass, MockModule("test"))
+    mock_platform(hass, "test.trigger", Mock(async_get_triggers=async_get_triggers))
+
+    # Entity reports in °F, trigger configured in °C: above 25°C
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 68,  # 68°F = 20°C, below threshold
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+
+    options = {
+        CONF_OPTIONS: {
+            CONF_THRESHOLD_TYPE: "above",
+            CONF_LOWER_LIMIT: 25,
+            CONF_UNIT: UnitOfTemperature.CELSIUS,
+        },
+    }
+
+    await async_setup_component(
+        hass,
+        automation.DOMAIN,
+        {
+            automation.DOMAIN: {
+                "trigger": {
+                    CONF_PLATFORM: "test.crossed_threshold",
+                    CONF_TARGET: {CONF_ENTITY_ID: "test.test_entity"},
+                }
+                | options,
+                "action": {
+                    "service": "test.automation",
+                    "data_template": {CONF_ENTITY_ID: "{{ trigger.entity_id }}"},
+                },
+            }
+        },
+    )
+
+    assert len(service_calls) == 0
+
+    # 80.6°F = 27°C, above 25°C threshold - should trigger
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 80.6,
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 1
+    service_calls.clear()
+
+    # Still above threshold - should NOT trigger (already crossed)
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 82,
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    # Drop below threshold and cross again
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 68,  # 20°C, below 25°C
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 80.6,  # 27°C, above 25°C again
+            ATTR_UNIT_OF_MEASUREMENT: UnitOfTemperature.FAHRENHEIT,
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 1
+    service_calls.clear()
+
+    # Test with incompatible unit - should NOT trigger
+    hass.states.async_set(
+        "test.test_entity",
+        "on",
+        {
+            "test_attribute": 50,
+            ATTR_UNIT_OF_MEASUREMENT: "invalid_unit",
+        },
+    )
+    await hass.async_block_till_done()
+    assert len(service_calls) == 0
+
+
 def _make_trigger(
     hass: HomeAssistant, domain_specs: Mapping[str, DomainSpec]
 ) -> EntityTriggerBase:
diff --git a/tests/snapshots/test_bootstrap.ambr b/tests/snapshots/test_bootstrap.ambr
index e93ccbc23d6..78384913587 100644
--- a/tests/snapshots/test_bootstrap.ambr
+++ b/tests/snapshots/test_bootstrap.ambr
@@ -86,6 +86,7 @@
     'system_health',
     'system_log',
     'tag',
+    'temperature',
     'text',
     'time',
     'timer',
@@ -190,6 +191,7 @@
     'system_health',
     'system_log',
     'tag',
+    'temperature',
     'text',
     'time',
     'timer',