diff --git a/tests/components/aemet/test_config_flow.py b/tests/components/aemet/test_config_flow.py
index 8c3264d8975..0caacf4e4c0 100644
--- a/tests/components/aemet/test_config_flow.py
+++ b/tests/components/aemet/test_config_flow.py
@@ -2,6 +2,7 @@
 from unittest.mock import AsyncMock, MagicMock, patch
 
 from aemet_opendata.exceptions import AuthError
+from freezegun.api import FrozenDateTimeFactory
 import pytest
 
 from homeassistant import data_entry_flow
@@ -9,7 +10,6 @@ from homeassistant.components.aemet.const import CONF_STATION_UPDATES, DOMAIN
 from homeassistant.config_entries import SOURCE_USER, ConfigEntryState
 from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE, CONF_NAME
 from homeassistant.core import HomeAssistant
-import homeassistant.util.dt as dt_util
 
 from .util import mock_api_call
 
@@ -59,13 +59,15 @@ async def test_form(hass: HomeAssistant, mock_setup_entry: AsyncMock) -> None:
         assert len(mock_setup_entry.mock_calls) == 1
 
 
-async def test_form_options(hass: HomeAssistant) -> None:
+async def test_form_options(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
     """Test the form options."""
 
-    now = dt_util.parse_datetime("2021-01-09 12:00:00+00:00")
-    with patch("homeassistant.util.dt.now", return_value=now), patch(
-        "homeassistant.util.dt.utcnow", return_value=now
-    ), patch(
+    hass.config.set_time_zone("UTC")
+    freezer.move_to("2021-01-09 12:00:00+00:00")
+    with patch(
         "homeassistant.components.aemet.AEMET.api_call",
         side_effect=mock_api_call,
     ):
@@ -116,13 +118,15 @@ async def test_form_options(hass: HomeAssistant) -> None:
         assert entry.state is ConfigEntryState.LOADED
 
 
-async def test_form_duplicated_id(hass: HomeAssistant) -> None:
+async def test_form_duplicated_id(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
     """Test setting up duplicated entry."""
 
-    now = dt_util.parse_datetime("2021-01-09 12:00:00+00:00")
-    with patch("homeassistant.util.dt.now", return_value=now), patch(
-        "homeassistant.util.dt.utcnow", return_value=now
-    ), patch(
+    hass.config.set_time_zone("UTC")
+    freezer.move_to("2021-01-09 12:00:00+00:00")
+    with patch(
         "homeassistant.components.aemet.AEMET.api_call",
         side_effect=mock_api_call,
     ):
diff --git a/tests/components/aemet/test_init.py b/tests/components/aemet/test_init.py
index f9eac318c6c..5055575e3fe 100644
--- a/tests/components/aemet/test_init.py
+++ b/tests/components/aemet/test_init.py
@@ -7,7 +7,6 @@ from homeassistant.components.aemet.const import DOMAIN
 from homeassistant.config_entries import ConfigEntryState
 from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE, CONF_NAME
 from homeassistant.core import HomeAssistant
-import homeassistant.util.dt as dt_util
 
 from .util import mock_api_call
 
@@ -21,13 +20,15 @@ CONFIG = {
 }
 
 
-async def test_unload_entry(hass: HomeAssistant) -> None:
-    """Test that the options form."""
+async def test_unload_entry(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
+    """Test (un)loading the AEMET integration."""
 
-    now = dt_util.parse_datetime("2021-01-09 12:00:00+00:00")
-    with patch("homeassistant.util.dt.now", return_value=now), patch(
-        "homeassistant.util.dt.utcnow", return_value=now
-    ), patch(
+    hass.config.set_time_zone("UTC")
+    freezer.move_to("2021-01-09 12:00:00+00:00")
+    with patch(
         "homeassistant.components.aemet.AEMET.api_call",
         side_effect=mock_api_call,
     ):
diff --git a/tests/components/aemet/test_sensor.py b/tests/components/aemet/test_sensor.py
index 99bce6b9471..4d61dde34fc 100644
--- a/tests/components/aemet/test_sensor.py
+++ b/tests/components/aemet/test_sensor.py
@@ -1,5 +1,6 @@
 """The sensor tests for the AEMET OpenData platform."""
-from unittest.mock import patch
+
+from freezegun.api import FrozenDateTimeFactory
 
 from homeassistant.components.weather import (
     ATTR_CONDITION_PARTLYCLOUDY,
@@ -12,15 +13,15 @@ import homeassistant.util.dt as dt_util
 from .util import async_init_integration
 
 
-async def test_aemet_forecast_create_sensors(hass: HomeAssistant) -> None:
+async def test_aemet_forecast_create_sensors(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
     """Test creation of forecast sensors."""
 
     hass.config.set_time_zone("UTC")
-    now = dt_util.parse_datetime("2021-01-09 12:00:00+00:00")
-    with patch("homeassistant.util.dt.now", return_value=now), patch(
-        "homeassistant.util.dt.utcnow", return_value=now
-    ):
-        await async_init_integration(hass)
+    freezer.move_to("2021-01-09 12:00:00+00:00")
+    await async_init_integration(hass)
 
     state = hass.states.get("sensor.aemet_daily_forecast_condition")
     assert state.state == ATTR_CONDITION_PARTLYCLOUDY
@@ -73,14 +74,15 @@ async def test_aemet_forecast_create_sensors(hass: HomeAssistant) -> None:
     assert state is None
 
 
-async def test_aemet_weather_create_sensors(hass: HomeAssistant) -> None:
+async def test_aemet_weather_create_sensors(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
     """Test creation of weather sensors."""
 
-    now = dt_util.parse_datetime("2021-01-09 12:00:00+00:00")
-    with patch("homeassistant.util.dt.now", return_value=now), patch(
-        "homeassistant.util.dt.utcnow", return_value=now
-    ):
-        await async_init_integration(hass)
+    hass.config.set_time_zone("UTC")
+    freezer.move_to("2021-01-09 12:00:00+00:00")
+    await async_init_integration(hass)
 
     state = hass.states.get("sensor.aemet_condition")
     assert state.state == ATTR_CONDITION_SNOWY
diff --git a/tests/components/aemet/test_weather.py b/tests/components/aemet/test_weather.py
index 703ef4348f8..ddcc29698fd 100644
--- a/tests/components/aemet/test_weather.py
+++ b/tests/components/aemet/test_weather.py
@@ -40,15 +40,15 @@ from .util import async_init_integration, mock_api_call
 from tests.typing import WebSocketGenerator
 
 
-async def test_aemet_weather(hass: HomeAssistant) -> None:
+async def test_aemet_weather(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
     """Test states of the weather."""
 
     hass.config.set_time_zone("UTC")
-    now = dt_util.parse_datetime("2021-01-09 12:00:00+00:00")
-    with patch("homeassistant.util.dt.now", return_value=now), patch(
-        "homeassistant.util.dt.utcnow", return_value=now
-    ):
-        await async_init_integration(hass)
+    freezer.move_to("2021-01-09 12:00:00+00:00")
+    await async_init_integration(hass)
 
     state = hass.states.get("weather.aemet")
     assert state
@@ -76,8 +76,11 @@ async def test_aemet_weather(hass: HomeAssistant) -> None:
     assert state is None
 
 
-async def test_aemet_weather_legacy(hass: HomeAssistant) -> None:
-    """Test states of the weather."""
+async def test_aemet_weather_legacy(
+    hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
+) -> None:
+    """Test states of legacy weather."""
 
     registry = er.async_get(hass)
     registry.async_get_or_create(
@@ -87,11 +90,8 @@ async def test_aemet_weather_legacy(hass: HomeAssistant) -> None:
     )
 
     hass.config.set_time_zone("UTC")
-    now = dt_util.parse_datetime("2021-01-09 12:00:00+00:00")
-    with patch("homeassistant.util.dt.now", return_value=now), patch(
-        "homeassistant.util.dt.utcnow", return_value=now
-    ):
-        await async_init_integration(hass)
+    freezer.move_to("2021-01-09 12:00:00+00:00")
+    await async_init_integration(hass)
 
     state = hass.states.get("weather.aemet_daily")
     assert state
@@ -121,15 +121,14 @@ async def test_aemet_weather_legacy(hass: HomeAssistant) -> None:
 
 async def test_forecast_service(
     hass: HomeAssistant,
+    freezer: FrozenDateTimeFactory,
     snapshot: SnapshotAssertion,
 ) -> None:
     """Test multiple forecast."""
+
     hass.config.set_time_zone("UTC")
-    now = dt_util.parse_datetime("2021-01-09 12:00:00+00:00")
-    with patch("homeassistant.util.dt.now", return_value=now), patch(
-        "homeassistant.util.dt.utcnow", return_value=now
-    ):
-        await async_init_integration(hass)
+    freezer.move_to("2021-01-09 12:00:00+00:00")
+    await async_init_integration(hass)
 
     response = await hass.services.async_call(
         WEATHER_DOMAIN,