diff --git a/homeassistant/components/template/trigger_entity.py b/homeassistant/components/template/trigger_entity.py
index d440d626606..4565e86843a 100644
--- a/homeassistant/components/template/trigger_entity.py
+++ b/homeassistant/components/template/trigger_entity.py
@@ -63,7 +63,9 @@ class TriggerEntity(  # pylint: disable=hass-enforce-class-module
     @callback
     def _render_script_variables(self) -> dict:
         """Render configured variables."""
-        return self.coordinator.data["run_variables"]
+        if self.coordinator.data is None:
+            return {}
+        return self.coordinator.data["run_variables"] or {}
 
     def _render_templates(self, variables: dict[str, Any]) -> None:
         """Render templates."""
diff --git a/tests/components/template/test_trigger_entity.py b/tests/components/template/test_trigger_entity.py
index 2f7e974e727..65db69fa2b9 100644
--- a/tests/components/template/test_trigger_entity.py
+++ b/tests/components/template/test_trigger_entity.py
@@ -118,3 +118,19 @@ async def test_template_state_syntax_error(
     assert entity.state is None
     assert entity.icon is None
     assert entity.entity_picture is None
+
+
+async def test_script_variables_from_coordinator(hass: HomeAssistant) -> None:
+    """Test script variables."""
+    coordinator = TriggerUpdateCoordinator(hass, {})
+    entity = TestEntity(hass, coordinator, {})
+
+    assert entity._render_script_variables() == {}
+
+    coordinator.data = {"run_variables": None}
+
+    assert entity._render_script_variables() == {}
+
+    coordinator._execute_update({"value": STATE_ON})
+
+    assert entity._render_script_variables() == {"value": STATE_ON}