diff --git a/homeassistant/components/openweathermap/const.py b/homeassistant/components/openweathermap/const.py
index 36f51a99ee1..2eb23e23861 100644
--- a/homeassistant/components/openweathermap/const.py
+++ b/homeassistant/components/openweathermap/const.py
@@ -149,6 +149,7 @@ LANGUAGES = [
     "zh_tw",
     "zu",
 ]
+WEATHER_CODE_SUNNY_OR_CLEAR_NIGHT = 800
 CONDITION_CLASSES = {
     ATTR_CONDITION_CLOUDY: [803, 804],
     ATTR_CONDITION_FOG: [701, 741],
@@ -160,7 +161,7 @@ CONDITION_CLASSES = {
     ATTR_CONDITION_RAINY: [300, 301, 302, 310, 311, 312, 313, 500, 501, 520, 521],
     ATTR_CONDITION_SNOWY: [600, 601, 602, 611, 612, 620, 621, 622],
     ATTR_CONDITION_SNOWY_RAINY: [511, 615, 616],
-    ATTR_CONDITION_SUNNY: [800],
+    ATTR_CONDITION_SUNNY: [WEATHER_CODE_SUNNY_OR_CLEAR_NIGHT],
     ATTR_CONDITION_WINDY: [905, 951, 952, 953, 954, 955, 956, 957],
     ATTR_CONDITION_WINDY_VARIANT: [958, 959, 960, 961],
     ATTR_CONDITION_EXCEPTIONAL: [
diff --git a/homeassistant/components/openweathermap/weather_update_coordinator.py b/homeassistant/components/openweathermap/weather_update_coordinator.py
index 40dddc2e90d..b4ddb40c046 100644
--- a/homeassistant/components/openweathermap/weather_update_coordinator.py
+++ b/homeassistant/components/openweathermap/weather_update_coordinator.py
@@ -6,6 +6,8 @@ import async_timeout
 from pyowm.commons.exceptions import APIRequestError, UnauthorizedError
 
 from homeassistant.components.weather import (
+    ATTR_CONDITION_CLEAR_NIGHT,
+    ATTR_CONDITION_SUNNY,
     ATTR_FORECAST_CONDITION,
     ATTR_FORECAST_PRECIPITATION,
     ATTR_FORECAST_TEMP,
@@ -14,7 +16,9 @@ from homeassistant.components.weather import (
     ATTR_FORECAST_WIND_BEARING,
     ATTR_FORECAST_WIND_SPEED,
 )
+from homeassistant.helpers import sun
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
+from homeassistant.util import dt
 
 from .const import (
     ATTR_API_CLOUDS,
@@ -35,6 +39,7 @@ from .const import (
     FORECAST_MODE_HOURLY,
     FORECAST_MODE_ONECALL_DAILY,
     FORECAST_MODE_ONECALL_HOURLY,
+    WEATHER_CODE_SUNNY_OR_CLEAR_NIGHT,
 )
 
 _LOGGER = logging.getLogger(__name__)
@@ -139,7 +144,9 @@ class WeatherUpdateCoordinator(DataUpdateCoordinator):
             ),
             ATTR_FORECAST_WIND_SPEED: entry.wind().get("speed"),
             ATTR_FORECAST_WIND_BEARING: entry.wind().get("deg"),
-            ATTR_FORECAST_CONDITION: self._get_condition(entry.weather_code),
+            ATTR_FORECAST_CONDITION: self._get_condition(
+                entry.weather_code, entry.reference_time("unix")
+            ),
         }
 
         temperature_dict = entry.temperature("celsius")
@@ -186,9 +193,17 @@ class WeatherUpdateCoordinator(DataUpdateCoordinator):
             return None
         return round(rain_value + snow_value, 1)
 
-    @staticmethod
-    def _get_condition(weather_code):
+    def _get_condition(self, weather_code, timestamp=None):
         """Get weather condition from weather data."""
+        if weather_code == WEATHER_CODE_SUNNY_OR_CLEAR_NIGHT:
+
+            if timestamp:
+                timestamp = dt.utc_from_timestamp(timestamp)
+
+            if sun.is_up(self.hass, timestamp):
+                return ATTR_CONDITION_SUNNY
+            return ATTR_CONDITION_CLEAR_NIGHT
+
         return [k for k, v in CONDITION_CLASSES.items() if weather_code in v][0]