diff --git a/homeassistant/components/accuweather/const.py b/homeassistant/components/accuweather/const.py
index aac37604584..fa9ed6b467f 100644
--- a/homeassistant/components/accuweather/const.py
+++ b/homeassistant/components/accuweather/const.py
@@ -1,4 +1,20 @@
 """Constants for AccuWeather integration."""
+from homeassistant.components.weather import (
+    ATTR_CONDITION_CLEAR_NIGHT,
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_EXCEPTIONAL,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_POURING,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
+)
 from homeassistant.const import (
     ATTR_DEVICE_CLASS,
     CONCENTRATION_PARTS_PER_CUBIC_METER,
@@ -29,20 +45,20 @@ NAME = "AccuWeather"
 UNDO_UPDATE_LISTENER = "undo_update_listener"
 
 CONDITION_CLASSES = {
-    "clear-night": [33, 34, 37],
-    "cloudy": [7, 8, 38],
-    "exceptional": [24, 30, 31],
-    "fog": [11],
-    "hail": [25],
-    "lightning": [15],
-    "lightning-rainy": [16, 17, 41, 42],
-    "partlycloudy": [4, 6, 35, 36],
-    "pouring": [18],
-    "rainy": [12, 13, 14, 26, 39, 40],
-    "snowy": [19, 20, 21, 22, 23, 43, 44],
-    "snowy-rainy": [29],
-    "sunny": [1, 2, 3, 5],
-    "windy": [32],
+    ATTR_CONDITION_CLEAR_NIGHT: [33, 34, 37],
+    ATTR_CONDITION_CLOUDY: [7, 8, 38],
+    ATTR_CONDITION_EXCEPTIONAL: [24, 30, 31],
+    ATTR_CONDITION_FOG: [11],
+    ATTR_CONDITION_HAIL: [25],
+    ATTR_CONDITION_LIGHTNING: [15],
+    ATTR_CONDITION_LIGHTNING_RAINY: [16, 17, 41, 42],
+    ATTR_CONDITION_PARTLYCLOUDY: [4, 6, 35, 36],
+    ATTR_CONDITION_POURING: [18],
+    ATTR_CONDITION_RAINY: [12, 13, 14, 26, 39, 40],
+    ATTR_CONDITION_SNOWY: [19, 20, 21, 22, 23, 43, 44],
+    ATTR_CONDITION_SNOWY_RAINY: [29],
+    ATTR_CONDITION_SUNNY: [1, 2, 3, 5],
+    ATTR_CONDITION_WINDY: [32],
 }
 
 FORECAST_DAYS = [0, 1, 2, 3, 4]
diff --git a/homeassistant/components/buienradar/weather.py b/homeassistant/components/buienradar/weather.py
index d0a0c0e18b4..4b0391c3190 100644
--- a/homeassistant/components/buienradar/weather.py
+++ b/homeassistant/components/buienradar/weather.py
@@ -14,6 +14,20 @@ from buienradar.constants import (
 import voluptuous as vol
 
 from homeassistant.components.weather import (
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_EXCEPTIONAL,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_POURING,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
+    ATTR_CONDITION_WINDY_VARIANT,
     ATTR_FORECAST_CONDITION,
     ATTR_FORECAST_PRECIPITATION,
     ATTR_FORECAST_TEMP,
@@ -40,20 +54,20 @@ CONF_FORECAST = "forecast"
 
 
 CONDITION_CLASSES = {
-    "cloudy": ["c", "p"],
-    "fog": ["d", "n"],
-    "hail": [],
-    "lightning": ["g"],
-    "lightning-rainy": ["s"],
-    "partlycloudy": ["b", "j", "o", "r"],
-    "pouring": ["l", "q"],
-    "rainy": ["f", "h", "k", "m"],
-    "snowy": ["u", "i", "v", "t"],
-    "snowy-rainy": ["w"],
-    "sunny": ["a"],
-    "windy": [],
-    "windy-variant": [],
-    "exceptional": [],
+    ATTR_CONDITION_CLOUDY: ["c", "p"],
+    ATTR_CONDITION_FOG: ["d", "n"],
+    ATTR_CONDITION_HAIL: [],
+    ATTR_CONDITION_LIGHTNING: ["g"],
+    ATTR_CONDITION_LIGHTNING_RAINY: ["s"],
+    ATTR_CONDITION_PARTLYCLOUDY: ["b", "j", "o", "r"],
+    ATTR_CONDITION_POURING: ["l", "q"],
+    ATTR_CONDITION_RAINY: ["f", "h", "k", "m"],
+    ATTR_CONDITION_SNOWY: ["u", "i", "v", "t"],
+    ATTR_CONDITION_SNOWY_RAINY: ["w"],
+    ATTR_CONDITION_SUNNY: ["a"],
+    ATTR_CONDITION_WINDY: [],
+    ATTR_CONDITION_WINDY_VARIANT: [],
+    ATTR_CONDITION_EXCEPTIONAL: [],
 }
 
 PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
diff --git a/homeassistant/components/darksky/weather.py b/homeassistant/components/darksky/weather.py
index fee7d60a2c3..0ad448ddfbd 100644
--- a/homeassistant/components/darksky/weather.py
+++ b/homeassistant/components/darksky/weather.py
@@ -7,6 +7,17 @@ from requests.exceptions import ConnectionError as ConnectError, HTTPError, Time
 import voluptuous as vol
 
 from homeassistant.components.weather import (
+    ATTR_CONDITION_CLEAR_NIGHT,
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
     ATTR_FORECAST_CONDITION,
     ATTR_FORECAST_PRECIPITATION,
     ATTR_FORECAST_TEMP,
@@ -40,18 +51,18 @@ ATTRIBUTION = "Powered by Dark Sky"
 FORECAST_MODE = ["hourly", "daily"]
 
 MAP_CONDITION = {
-    "clear-day": "sunny",
-    "clear-night": "clear-night",
-    "rain": "rainy",
-    "snow": "snowy",
-    "sleet": "snowy-rainy",
-    "wind": "windy",
-    "fog": "fog",
-    "cloudy": "cloudy",
-    "partly-cloudy-day": "partlycloudy",
-    "partly-cloudy-night": "partlycloudy",
-    "hail": "hail",
-    "thunderstorm": "lightning",
+    "clear-day": ATTR_CONDITION_SUNNY,
+    "clear-night": ATTR_CONDITION_CLEAR_NIGHT,
+    "rain": ATTR_CONDITION_RAINY,
+    "snow": ATTR_CONDITION_SNOWY,
+    "sleet": ATTR_CONDITION_SNOWY_RAINY,
+    "wind": ATTR_CONDITION_WINDY,
+    "fog": ATTR_CONDITION_FOG,
+    "cloudy": ATTR_CONDITION_CLOUDY,
+    "partly-cloudy-day": ATTR_CONDITION_PARTLYCLOUDY,
+    "partly-cloudy-night": ATTR_CONDITION_PARTLYCLOUDY,
+    "hail": ATTR_CONDITION_HAIL,
+    "thunderstorm": ATTR_CONDITION_LIGHTNING,
     "tornado": None,
 }
 
diff --git a/homeassistant/components/demo/weather.py b/homeassistant/components/demo/weather.py
index 3c87cd1c27c..9792a45bbdf 100644
--- a/homeassistant/components/demo/weather.py
+++ b/homeassistant/components/demo/weather.py
@@ -2,6 +2,20 @@
 from datetime import timedelta
 
 from homeassistant.components.weather import (
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_EXCEPTIONAL,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_POURING,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
+    ATTR_CONDITION_WINDY_VARIANT,
     ATTR_FORECAST_CONDITION,
     ATTR_FORECAST_PRECIPITATION,
     ATTR_FORECAST_PRECIPITATION_PROBABILITY,
@@ -14,20 +28,20 @@ from homeassistant.const import TEMP_CELSIUS, TEMP_FAHRENHEIT
 import homeassistant.util.dt as dt_util
 
 CONDITION_CLASSES = {
-    "cloudy": [],
-    "fog": [],
-    "hail": [],
-    "lightning": [],
-    "lightning-rainy": [],
-    "partlycloudy": [],
-    "pouring": [],
-    "rainy": ["shower rain"],
-    "snowy": [],
-    "snowy-rainy": [],
-    "sunny": ["sunshine"],
-    "windy": [],
-    "windy-variant": [],
-    "exceptional": [],
+    ATTR_CONDITION_CLOUDY: [],
+    ATTR_CONDITION_FOG: [],
+    ATTR_CONDITION_HAIL: [],
+    ATTR_CONDITION_LIGHTNING: [],
+    ATTR_CONDITION_LIGHTNING_RAINY: [],
+    ATTR_CONDITION_PARTLYCLOUDY: [],
+    ATTR_CONDITION_POURING: [],
+    ATTR_CONDITION_RAINY: ["shower rain"],
+    ATTR_CONDITION_SNOWY: [],
+    ATTR_CONDITION_SNOWY_RAINY: [],
+    ATTR_CONDITION_SUNNY: ["sunshine"],
+    ATTR_CONDITION_WINDY: [],
+    ATTR_CONDITION_WINDY_VARIANT: [],
+    ATTR_CONDITION_EXCEPTIONAL: [],
 }
 
 
@@ -49,13 +63,13 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
                 0.5,
                 TEMP_CELSIUS,
                 [
-                    ["rainy", 1, 22, 15, 60],
-                    ["rainy", 5, 19, 8, 30],
-                    ["cloudy", 0, 15, 9, 10],
-                    ["sunny", 0, 12, 6, 0],
-                    ["partlycloudy", 2, 14, 7, 20],
-                    ["rainy", 15, 18, 7, 0],
-                    ["fog", 0.2, 21, 12, 100],
+                    [ATTR_CONDITION_RAINY, 1, 22, 15, 60],
+                    [ATTR_CONDITION_RAINY, 5, 19, 8, 30],
+                    [ATTR_CONDITION_CLOUDY, 0, 15, 9, 10],
+                    [ATTR_CONDITION_SUNNY, 0, 12, 6, 0],
+                    [ATTR_CONDITION_PARTLYCLOUDY, 2, 14, 7, 20],
+                    [ATTR_CONDITION_RAINY, 15, 18, 7, 0],
+                    [ATTR_CONDITION_FOG, 0.2, 21, 12, 100],
                 ],
             ),
             DemoWeather(
@@ -67,13 +81,13 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
                 4.8,
                 TEMP_FAHRENHEIT,
                 [
-                    ["snowy", 2, -10, -15, 60],
-                    ["partlycloudy", 1, -13, -14, 25],
-                    ["sunny", 0, -18, -22, 70],
-                    ["sunny", 0.1, -23, -23, 90],
-                    ["snowy", 4, -19, -20, 40],
-                    ["sunny", 0.3, -14, -19, 0],
-                    ["sunny", 0, -9, -12, 0],
+                    [ATTR_CONDITION_SNOWY, 2, -10, -15, 60],
+                    [ATTR_CONDITION_PARTLYCLOUDY, 1, -13, -14, 25],
+                    [ATTR_CONDITION_SUNNY, 0, -18, -22, 70],
+                    [ATTR_CONDITION_SUNNY, 0.1, -23, -23, 90],
+                    [ATTR_CONDITION_SNOWY, 4, -19, -20, 40],
+                    [ATTR_CONDITION_SUNNY, 0.3, -14, -19, 0],
+                    [ATTR_CONDITION_SUNNY, 0, -9, -12, 0],
                 ],
             ),
         ]
diff --git a/homeassistant/components/ecobee/const.py b/homeassistant/components/ecobee/const.py
index f380c9bbef3..5ec3a0fcf96 100644
--- a/homeassistant/components/ecobee/const.py
+++ b/homeassistant/components/ecobee/const.py
@@ -1,6 +1,20 @@
 """Constants for the ecobee integration."""
 import logging
 
+from homeassistant.components.weather import (
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_POURING,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
+)
+
 _LOGGER = logging.getLogger(__package__)
 
 DOMAIN = "ecobee"
@@ -30,25 +44,25 @@ MANUFACTURER = "ecobee"
 # Translates ecobee API weatherSymbol to Home Assistant usable names
 # https://www.ecobee.com/home/developer/api/documentation/v1/objects/WeatherForecast.shtml
 ECOBEE_WEATHER_SYMBOL_TO_HASS = {
-    0: "sunny",
-    1: "partlycloudy",
-    2: "partlycloudy",
-    3: "cloudy",
-    4: "cloudy",
-    5: "cloudy",
-    6: "rainy",
-    7: "snowy-rainy",
-    8: "pouring",
-    9: "hail",
-    10: "snowy",
-    11: "snowy",
-    12: "snowy-rainy",
+    0: ATTR_CONDITION_SUNNY,
+    1: ATTR_CONDITION_PARTLYCLOUDY,
+    2: ATTR_CONDITION_PARTLYCLOUDY,
+    3: ATTR_CONDITION_CLOUDY,
+    4: ATTR_CONDITION_CLOUDY,
+    5: ATTR_CONDITION_CLOUDY,
+    6: ATTR_CONDITION_RAINY,
+    7: ATTR_CONDITION_SNOWY_RAINY,
+    8: ATTR_CONDITION_POURING,
+    9: ATTR_CONDITION_HAIL,
+    10: ATTR_CONDITION_SNOWY,
+    11: ATTR_CONDITION_SNOWY,
+    12: ATTR_CONDITION_SNOWY_RAINY,
     13: "snowy-heavy",
-    14: "hail",
-    15: "lightning-rainy",
-    16: "windy",
+    14: ATTR_CONDITION_HAIL,
+    15: ATTR_CONDITION_LIGHTNING_RAINY,
+    16: ATTR_CONDITION_WINDY,
     17: "tornado",
-    18: "fog",
+    18: ATTR_CONDITION_FOG,
     19: "hazy",
     20: "hazy",
     21: "hazy",
diff --git a/homeassistant/components/environment_canada/weather.py b/homeassistant/components/environment_canada/weather.py
index 3c3dbfe6ce6..f4fa96b52d6 100644
--- a/homeassistant/components/environment_canada/weather.py
+++ b/homeassistant/components/environment_canada/weather.py
@@ -6,6 +6,18 @@ from env_canada import ECData  # pylint: disable=import-error
 import voluptuous as vol
 
 from homeassistant.components.weather import (
+    ATTR_CONDITION_CLEAR_NIGHT,
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_POURING,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
     ATTR_FORECAST_CONDITION,
     ATTR_FORECAST_PRECIPITATION_PROBABILITY,
     ATTR_FORECAST_TEMP,
@@ -45,18 +57,18 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 # Icon codes from http://dd.weatheroffice.ec.gc.ca/citypage_weather/
 # docs/current_conditions_icon_code_descriptions_e.csv
 ICON_CONDITION_MAP = {
-    "sunny": [0, 1],
-    "clear-night": [30, 31],
-    "partlycloudy": [2, 3, 4, 5, 22, 32, 33, 34, 35],
-    "cloudy": [10],
-    "rainy": [6, 9, 11, 12, 28, 36],
-    "lightning-rainy": [19, 39, 46, 47],
-    "pouring": [13],
-    "snowy-rainy": [7, 14, 15, 27, 37],
-    "snowy": [8, 16, 17, 18, 25, 26, 38, 40],
-    "windy": [43],
-    "fog": [20, 21, 23, 24, 44],
-    "hail": [26, 27],
+    ATTR_CONDITION_SUNNY: [0, 1],
+    ATTR_CONDITION_CLEAR_NIGHT: [30, 31],
+    ATTR_CONDITION_PARTLYCLOUDY: [2, 3, 4, 5, 22, 32, 33, 34, 35],
+    ATTR_CONDITION_CLOUDY: [10],
+    ATTR_CONDITION_RAINY: [6, 9, 11, 12, 28, 36],
+    ATTR_CONDITION_LIGHTNING_RAINY: [19, 39, 46, 47],
+    ATTR_CONDITION_POURING: [13],
+    ATTR_CONDITION_SNOWY_RAINY: [7, 14, 15, 27, 37],
+    ATTR_CONDITION_SNOWY: [8, 16, 17, 18, 25, 26, 38, 40],
+    ATTR_CONDITION_WINDY: [43],
+    ATTR_CONDITION_FOG: [20, 21, 23, 24, 44],
+    ATTR_CONDITION_HAIL: [26, 27],
 }
 
 
diff --git a/homeassistant/components/homematicip_cloud/weather.py b/homeassistant/components/homematicip_cloud/weather.py
index b880cfdf1cc..bdfd505a317 100644
--- a/homeassistant/components/homematicip_cloud/weather.py
+++ b/homeassistant/components/homematicip_cloud/weather.py
@@ -6,7 +6,19 @@ from homematicip.aio.device import (
 )
 from homematicip.base.enums import WeatherCondition
 
-from homeassistant.components.weather import WeatherEntity
+from homeassistant.components.weather import (
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_LIGHTNING,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
+    WeatherEntity,
+)
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import TEMP_CELSIUS
 from homeassistant.helpers.typing import HomeAssistantType
@@ -15,20 +27,20 @@ from . import DOMAIN as HMIPC_DOMAIN, HomematicipGenericEntity
 from .hap import HomematicipHAP
 
 HOME_WEATHER_CONDITION = {
-    WeatherCondition.CLEAR: "sunny",
-    WeatherCondition.LIGHT_CLOUDY: "partlycloudy",
-    WeatherCondition.CLOUDY: "cloudy",
-    WeatherCondition.CLOUDY_WITH_RAIN: "rainy",
-    WeatherCondition.CLOUDY_WITH_SNOW_RAIN: "snowy-rainy",
-    WeatherCondition.HEAVILY_CLOUDY: "cloudy",
-    WeatherCondition.HEAVILY_CLOUDY_WITH_RAIN: "rainy",
-    WeatherCondition.HEAVILY_CLOUDY_WITH_STRONG_RAIN: "snowy-rainy",
-    WeatherCondition.HEAVILY_CLOUDY_WITH_SNOW: "snowy",
-    WeatherCondition.HEAVILY_CLOUDY_WITH_SNOW_RAIN: "snowy-rainy",
-    WeatherCondition.HEAVILY_CLOUDY_WITH_THUNDER: "lightning",
-    WeatherCondition.HEAVILY_CLOUDY_WITH_RAIN_AND_THUNDER: "lightning-rainy",
-    WeatherCondition.FOGGY: "fog",
-    WeatherCondition.STRONG_WIND: "windy",
+    WeatherCondition.CLEAR: ATTR_CONDITION_SUNNY,
+    WeatherCondition.LIGHT_CLOUDY: ATTR_CONDITION_PARTLYCLOUDY,
+    WeatherCondition.CLOUDY: ATTR_CONDITION_CLOUDY,
+    WeatherCondition.CLOUDY_WITH_RAIN: ATTR_CONDITION_RAINY,
+    WeatherCondition.CLOUDY_WITH_SNOW_RAIN: ATTR_CONDITION_SNOWY_RAINY,
+    WeatherCondition.HEAVILY_CLOUDY: ATTR_CONDITION_CLOUDY,
+    WeatherCondition.HEAVILY_CLOUDY_WITH_RAIN: ATTR_CONDITION_RAINY,
+    WeatherCondition.HEAVILY_CLOUDY_WITH_STRONG_RAIN: ATTR_CONDITION_SNOWY_RAINY,
+    WeatherCondition.HEAVILY_CLOUDY_WITH_SNOW: ATTR_CONDITION_SNOWY,
+    WeatherCondition.HEAVILY_CLOUDY_WITH_SNOW_RAIN: ATTR_CONDITION_SNOWY_RAINY,
+    WeatherCondition.HEAVILY_CLOUDY_WITH_THUNDER: ATTR_CONDITION_LIGHTNING,
+    WeatherCondition.HEAVILY_CLOUDY_WITH_RAIN_AND_THUNDER: ATTR_CONDITION_LIGHTNING_RAINY,
+    WeatherCondition.FOGGY: ATTR_CONDITION_FOG,
+    WeatherCondition.STRONG_WIND: ATTR_CONDITION_WINDY,
     WeatherCondition.UNKNOWN: "",
 }
 
@@ -92,11 +104,11 @@ class HomematicipWeatherSensor(HomematicipGenericEntity, WeatherEntity):
     def condition(self) -> str:
         """Return the current condition."""
         if getattr(self._device, "raining", None):
-            return "rainy"
+            return ATTR_CONDITION_RAINY
         if self._device.storm:
-            return "windy"
+            return ATTR_CONDITION_WINDY
         if self._device.sunshine:
-            return "sunny"
+            return ATTR_CONDITION_SUNNY
         return ""
 
 
diff --git a/homeassistant/components/ipma/weather.py b/homeassistant/components/ipma/weather.py
index d8ac0c039da..32a5967f8b4 100644
--- a/homeassistant/components/ipma/weather.py
+++ b/homeassistant/components/ipma/weather.py
@@ -8,6 +8,20 @@ from pyipma.location import Location
 import voluptuous as vol
 
 from homeassistant.components.weather import (
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_EXCEPTIONAL,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_POURING,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
+    ATTR_CONDITION_WINDY_VARIANT,
     ATTR_FORECAST_CONDITION,
     ATTR_FORECAST_PRECIPITATION_PROBABILITY,
     ATTR_FORECAST_TEMP,
@@ -38,20 +52,20 @@ ATTRIBUTION = "Instituto Português do Mar e Atmosfera"
 MIN_TIME_BETWEEN_UPDATES = timedelta(minutes=30)
 
 CONDITION_CLASSES = {
-    "cloudy": [4, 5, 24, 25, 27],
-    "fog": [16, 17, 26],
-    "hail": [21, 22],
-    "lightning": [19],
-    "lightning-rainy": [20, 23],
-    "partlycloudy": [2, 3],
-    "pouring": [8, 11],
-    "rainy": [6, 7, 9, 10, 12, 13, 14, 15],
-    "snowy": [18],
-    "snowy-rainy": [],
-    "sunny": [1],
-    "windy": [],
-    "windy-variant": [],
-    "exceptional": [],
+    ATTR_CONDITION_CLOUDY: [4, 5, 24, 25, 27],
+    ATTR_CONDITION_FOG: [16, 17, 26],
+    ATTR_CONDITION_HAIL: [21, 22],
+    ATTR_CONDITION_LIGHTNING: [19],
+    ATTR_CONDITION_LIGHTNING_RAINY: [20, 23],
+    ATTR_CONDITION_PARTLYCLOUDY: [2, 3],
+    ATTR_CONDITION_POURING: [8, 11],
+    ATTR_CONDITION_RAINY: [6, 7, 9, 10, 12, 13, 14, 15],
+    ATTR_CONDITION_SNOWY: [18],
+    ATTR_CONDITION_SNOWY_RAINY: [],
+    ATTR_CONDITION_SUNNY: [1],
+    ATTR_CONDITION_WINDY: [],
+    ATTR_CONDITION_WINDY_VARIANT: [],
+    ATTR_CONDITION_EXCEPTIONAL: [],
 }
 
 FORECAST_MODE = ["hourly", "daily"]
diff --git a/homeassistant/components/meteo_france/const.py b/homeassistant/components/meteo_france/const.py
index 3ae24cbc71b..bfbaa828ea7 100644
--- a/homeassistant/components/meteo_france/const.py
+++ b/homeassistant/components/meteo_france/const.py
@@ -1,5 +1,22 @@
 """Meteo-France component constants."""
 
+from homeassistant.components.weather import (
+    ATTR_CONDITION_CLEAR_NIGHT,
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_EXCEPTIONAL,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_POURING,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
+    ATTR_CONDITION_WINDY_VARIANT,
+)
 from homeassistant.const import (
     DEVICE_CLASS_PRESSURE,
     DEVICE_CLASS_TEMPERATURE,
@@ -126,27 +143,31 @@ SENSOR_TYPES = {
 }
 
 CONDITION_CLASSES = {
-    "clear-night": ["Nuit Claire", "Nuit claire"],
-    "cloudy": ["Très nuageux", "Couvert"],
-    "fog": [
+    ATTR_CONDITION_CLEAR_NIGHT: ["Nuit Claire", "Nuit claire"],
+    ATTR_CONDITION_CLOUDY: ["Très nuageux", "Couvert"],
+    ATTR_CONDITION_FOG: [
         "Brume ou bancs de brouillard",
         "Brume",
         "Brouillard",
         "Brouillard givrant",
         "Bancs de Brouillard",
     ],
-    "hail": ["Risque de grêle", "Risque de grèle"],
-    "lightning": ["Risque d'orages", "Orages"],
-    "lightning-rainy": ["Pluie orageuses", "Pluies orageuses", "Averses orageuses"],
-    "partlycloudy": [
+    ATTR_CONDITION_HAIL: ["Risque de grêle", "Risque de grèle"],
+    ATTR_CONDITION_LIGHTNING: ["Risque d'orages", "Orages"],
+    ATTR_CONDITION_LIGHTNING_RAINY: [
+        "Pluie orageuses",
+        "Pluies orageuses",
+        "Averses orageuses",
+    ],
+    ATTR_CONDITION_PARTLYCLOUDY: [
         "Ciel voilé",
         "Ciel voilé nuit",
         "Éclaircies",
         "Eclaircies",
         "Peu nuageux",
     ],
-    "pouring": ["Pluie forte"],
-    "rainy": [
+    ATTR_CONDITION_POURING: ["Pluie forte"],
+    ATTR_CONDITION_RAINY: [
         "Bruine / Pluie faible",
         "Bruine",
         "Pluie faible",
@@ -158,16 +179,16 @@ CONDITION_CLASSES = {
         "Averses",
         "Pluie",
     ],
-    "snowy": [
+    ATTR_CONDITION_SNOWY: [
         "Neige / Averses de neige",
         "Neige",
         "Averses de neige",
         "Neige forte",
         "Quelques flocons",
     ],
-    "snowy-rainy": ["Pluie et neige", "Pluie verglaçante"],
-    "sunny": ["Ensoleillé"],
-    "windy": [],
-    "windy-variant": [],
-    "exceptional": [],
+    ATTR_CONDITION_SNOWY_RAINY: ["Pluie et neige", "Pluie verglaçante"],
+    ATTR_CONDITION_SUNNY: ["Ensoleillé"],
+    ATTR_CONDITION_WINDY: [],
+    ATTR_CONDITION_WINDY_VARIANT: [],
+    ATTR_CONDITION_EXCEPTIONAL: [],
 }
diff --git a/homeassistant/components/metoffice/const.py b/homeassistant/components/metoffice/const.py
index b088672b8a5..e710911ee59 100644
--- a/homeassistant/components/metoffice/const.py
+++ b/homeassistant/components/metoffice/const.py
@@ -1,6 +1,23 @@
 """Constants for Met Office Integration."""
 from datetime import timedelta
 
+from homeassistant.components.weather import (
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_EXCEPTIONAL,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_POURING,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
+    ATTR_CONDITION_WINDY_VARIANT,
+)
+
 DOMAIN = "metoffice"
 
 DEFAULT_NAME = "Met Office"
@@ -16,20 +33,20 @@ METOFFICE_NAME = "metoffice_name"
 MODE_3HOURLY = "3hourly"
 
 CONDITION_CLASSES = {
-    "cloudy": ["7", "8"],
-    "fog": ["5", "6"],
-    "hail": ["19", "20", "21"],
-    "lightning": ["30"],
-    "lightning-rainy": ["28", "29"],
-    "partlycloudy": ["2", "3"],
-    "pouring": ["13", "14", "15"],
-    "rainy": ["9", "10", "11", "12"],
-    "snowy": ["22", "23", "24", "25", "26", "27"],
-    "snowy-rainy": ["16", "17", "18"],
-    "sunny": ["0", "1"],
-    "windy": [],
-    "windy-variant": [],
-    "exceptional": [],
+    ATTR_CONDITION_CLOUDY: ["7", "8"],
+    ATTR_CONDITION_FOG: ["5", "6"],
+    ATTR_CONDITION_HAIL: ["19", "20", "21"],
+    ATTR_CONDITION_LIGHTNING: ["30"],
+    ATTR_CONDITION_LIGHTNING_RAINY: ["28", "29"],
+    ATTR_CONDITION_PARTLYCLOUDY: ["2", "3"],
+    ATTR_CONDITION_POURING: ["13", "14", "15"],
+    ATTR_CONDITION_RAINY: ["9", "10", "11", "12"],
+    ATTR_CONDITION_SNOWY: ["22", "23", "24", "25", "26", "27"],
+    ATTR_CONDITION_SNOWY_RAINY: ["16", "17", "18"],
+    ATTR_CONDITION_SUNNY: ["0", "1"],
+    ATTR_CONDITION_WINDY: [],
+    ATTR_CONDITION_WINDY_VARIANT: [],
+    ATTR_CONDITION_EXCEPTIONAL: [],
 }
 
 VISIBILITY_CLASSES = {
diff --git a/homeassistant/components/openweathermap/const.py b/homeassistant/components/openweathermap/const.py
index 2c23c618c75..36f51a99ee1 100644
--- a/homeassistant/components/openweathermap/const.py
+++ b/homeassistant/components/openweathermap/const.py
@@ -1,5 +1,19 @@
 """Consts for the OpenWeatherMap."""
 from homeassistant.components.weather import (
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_EXCEPTIONAL,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_POURING,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
+    ATTR_CONDITION_WINDY_VARIANT,
     ATTR_FORECAST_CONDITION,
     ATTR_FORECAST_PRECIPITATION,
     ATTR_FORECAST_TEMP,
@@ -136,20 +150,33 @@ LANGUAGES = [
     "zu",
 ]
 CONDITION_CLASSES = {
-    "cloudy": [803, 804],
-    "fog": [701, 741],
-    "hail": [906],
-    "lightning": [210, 211, 212, 221],
-    "lightning-rainy": [200, 201, 202, 230, 231, 232],
-    "partlycloudy": [801, 802],
-    "pouring": [504, 314, 502, 503, 522],
-    "rainy": [300, 301, 302, 310, 311, 312, 313, 500, 501, 520, 521],
-    "snowy": [600, 601, 602, 611, 612, 620, 621, 622],
-    "snowy-rainy": [511, 615, 616],
-    "sunny": [800],
-    "windy": [905, 951, 952, 953, 954, 955, 956, 957],
-    "windy-variant": [958, 959, 960, 961],
-    "exceptional": [711, 721, 731, 751, 761, 762, 771, 900, 901, 962, 903, 904],
+    ATTR_CONDITION_CLOUDY: [803, 804],
+    ATTR_CONDITION_FOG: [701, 741],
+    ATTR_CONDITION_HAIL: [906],
+    ATTR_CONDITION_LIGHTNING: [210, 211, 212, 221],
+    ATTR_CONDITION_LIGHTNING_RAINY: [200, 201, 202, 230, 231, 232],
+    ATTR_CONDITION_PARTLYCLOUDY: [801, 802],
+    ATTR_CONDITION_POURING: [504, 314, 502, 503, 522],
+    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_WINDY: [905, 951, 952, 953, 954, 955, 956, 957],
+    ATTR_CONDITION_WINDY_VARIANT: [958, 959, 960, 961],
+    ATTR_CONDITION_EXCEPTIONAL: [
+        711,
+        721,
+        731,
+        751,
+        761,
+        762,
+        771,
+        900,
+        901,
+        962,
+        903,
+        904,
+    ],
 }
 WEATHER_SENSOR_TYPES = {
     ATTR_API_WEATHER: {SENSOR_NAME: "Weather"},
diff --git a/homeassistant/components/smhi/weather.py b/homeassistant/components/smhi/weather.py
index f09491bf611..c13982ee15d 100644
--- a/homeassistant/components/smhi/weather.py
+++ b/homeassistant/components/smhi/weather.py
@@ -10,6 +10,20 @@ from smhi import Smhi
 from smhi.smhi_lib import SmhiForecastException
 
 from homeassistant.components.weather import (
+    ATTR_CONDITION_CLOUDY,
+    ATTR_CONDITION_EXCEPTIONAL,
+    ATTR_CONDITION_FOG,
+    ATTR_CONDITION_HAIL,
+    ATTR_CONDITION_LIGHTNING,
+    ATTR_CONDITION_LIGHTNING_RAINY,
+    ATTR_CONDITION_PARTLYCLOUDY,
+    ATTR_CONDITION_POURING,
+    ATTR_CONDITION_RAINY,
+    ATTR_CONDITION_SNOWY,
+    ATTR_CONDITION_SNOWY_RAINY,
+    ATTR_CONDITION_SUNNY,
+    ATTR_CONDITION_WINDY,
+    ATTR_CONDITION_WINDY_VARIANT,
     ATTR_FORECAST_CONDITION,
     ATTR_FORECAST_PRECIPITATION,
     ATTR_FORECAST_TEMP,
@@ -29,20 +43,20 @@ _LOGGER = logging.getLogger(__name__)
 
 # Used to map condition from API results
 CONDITION_CLASSES = {
-    "cloudy": [5, 6],
-    "fog": [7],
-    "hail": [],
-    "lightning": [21],
-    "lightning-rainy": [11],
-    "partlycloudy": [3, 4],
-    "pouring": [10, 20],
-    "rainy": [8, 9, 18, 19],
-    "snowy": [15, 16, 17, 25, 26, 27],
-    "snowy-rainy": [12, 13, 14, 22, 23, 24],
-    "sunny": [1, 2],
-    "windy": [],
-    "windy-variant": [],
-    "exceptional": [],
+    ATTR_CONDITION_CLOUDY: [5, 6],
+    ATTR_CONDITION_FOG: [7],
+    ATTR_CONDITION_HAIL: [],
+    ATTR_CONDITION_LIGHTNING: [21],
+    ATTR_CONDITION_LIGHTNING_RAINY: [11],
+    ATTR_CONDITION_PARTLYCLOUDY: [3, 4],
+    ATTR_CONDITION_POURING: [10, 20],
+    ATTR_CONDITION_RAINY: [8, 9, 18, 19],
+    ATTR_CONDITION_SNOWY: [15, 16, 17, 25, 26, 27],
+    ATTR_CONDITION_SNOWY_RAINY: [12, 13, 14, 22, 23, 24],
+    ATTR_CONDITION_SUNNY: [1, 2],
+    ATTR_CONDITION_WINDY: [],
+    ATTR_CONDITION_WINDY_VARIANT: [],
+    ATTR_CONDITION_EXCEPTIONAL: [],
 }
 
 # 5 minutes between retrying connect to API again