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Weather forecast in Loudoun County, United States

Loudoun County, current weather: clear, no precipitation is expected for the next 2 hours. Air temperature +21°, feels like +18°. Wind speed 3.1 Meters per second, north-westerly. Pressure 755 millimeters of mercury. Humidity 38%. Daytime water temperature +18°. Sunrise 06:45, Sunset 19:30. This time yesterday +21°

What type of warnings are you interested in?

Hourly forecast.

  • 6 pm: +21°, clear, Feels like +18°.

  • 7 pm: +20°, clear, Feels like +18°.

  • Sunset 8 September 07:30 pm

  • 8 pm: +18°, clear, Feels like +16°.

  • 9 pm: +14°, clear, Feels like +12°.

  • 10 pm: +13°, clear, Feels like +11°.

  • 11 pm: +12°, clear, Feels like +10°.

  • Monday, 12 am: +11°, clear, Feels like +9°.

  • 1 am: +10°, clear, Feels like +8°.

  • 2 am: +10°, clear, Feels like +8°.

  • 3 am: +9°, clear, Feels like +7°.

  • 4 am: +8°, clear, Feels like +6°.

  • 5 am: +8°, clear, Feels like +6°.

  • 6 am: +7°, clear, Feels like +5°.

  • Sunrise 9 September 06:46 am

  • 7 am: +8°, clear, Feels like +6°.

  • 8 am: +12°, clear, Feels like +11°.

  • 9 am: +18°, clear, Feels like +17°.

  • 10 am: +21°, clear, Feels like +20°.

  • 11 am: +23°, clear, Feels like +22°.

  • 12 pm: +24°, clear, Feels like +23°.

  • 1 pm: +25°, clear, Feels like +24°.

  • 2 pm: +26°, clear, Feels like +24°.

  • 3 pm: +26°, clear, Feels like +24°.

  • 4 pm: +26°, clear, Feels like +23°.

  • 5 pm: +26°, clear, Feels like +23°.

  • 6 pm: +24°, clear, Feels like +21°.

  • 7 pm: +22°, clear, Feels like +21°.

  • Sunset 9 September 07:28 pm

  • 8 pm: +19°, clear, Feels like +18°.

  • 9 pm: +17°, clear, Feels like +16°.

  • 10 pm: +16°, clear, Feels like +15°.

  • 11 pm: +14°, clear, Feels like +13°.

Air quality forecast

Good

The air quality is good. Enjoy your usual outdoor activities.

  • AQI — 40
  • AQI — 40
  • AQI — 40
  • AQI — 48
  • AQI — 43
  • AQI — 36
  • AQI — 48
  • AQI — 37

Weather forecast for Today, 8 September: in the morning air temperature +15°, feels like +13°, clear, wind speed 3.7 meters per second, north-westerly, humidity 68%, pressure 756 millimeters of mercury; in the afternoon +22°, feels like +20°, clear, wind speed 3.9 meters per second, north-westerly, humidity 32%, pressure 756 millimeters of mercury; in the evening +18°, feels like +15°, clear, wind speed 2.7 meters per second, north-westerly, humidity 43%, pressure 756 millimeters of mercury; in the night +10°, feels like +8°, clear, wind speed 1.2 meters per second, westerly, humidity 64%, pressure 758 millimeters of mercury; uv index: 7, high; magnetic field: quiet; daytime water temperature +18°; sunrise 06:45; sunset 19:30; daylight hours: 12 hr 45 min

Weather forecast for Tomorrow, 9 September: in the morning air temperature +15°, feels like +14°, clear, wind speed 2 meters per second, westerly, humidity 59%, pressure 758 millimeters of mercury; in the afternoon +26°, feels like +25°, clear, wind speed 3 meters per second, south-westerly, humidity 26%, pressure 757 millimeters of mercury; in the evening +21°, feels like +19°, clear, wind speed 2.2 meters per second, southerly, humidity 45%, pressure 756 millimeters of mercury; in the night +13°, feels like +12°, clear, wind speed 1.2 meters per second, south-westerly, humidity 72%, pressure 757 millimeters of mercury; uv index: 7, high; magnetic field: quiet; daytime water temperature +15°; sunrise 06:46; sunset 19:28; daylight hours: 12 hr 42 min

Weather forecast for Tuesday, 10 September: in the morning air temperature +18°, feels like +17°, clear, wind speed 2.4 meters per second, north-westerly, humidity 61%, pressure 757 millimeters of mercury; in the afternoon +28°, feels like +29°, mostly clear, wind speed 2.5 meters per second, north-westerly, humidity 35%, pressure 757 millimeters of mercury; in the evening +23°, feels like +23°, mostly clear, wind speed 1.6 meters per second, easterly, humidity 53%, pressure 757 millimeters of mercury; in the night +15°, feels like +15°, mostly clear, wind speed 0.8 meters per second, easterly, humidity 79%, pressure 757 millimeters of mercury; uv index: 7, high; magnetic field: slightly active; daytime water temperature +17°; sunrise 06:46; sunset 19:26; daylight hours: 12 hr 40 min

Weather forecast for Wednesday, 11 September: in the morning air temperature +19°, feels like +20°, clear, wind speed 1.7 meters per second, northerly, humidity 72%, pressure 758 millimeters of mercury; in the afternoon +29°, feels like +30°, mostly clear, wind speed 2.2 meters per second, southerly, humidity 38%, pressure 758 millimeters of mercury; in the evening +25°, feels like +25°, mostly clear, wind speed 1.7 meters per second, easterly, humidity 47%, pressure 757 millimeters of mercury; in the night +17°, feels like +17°, clear, wind speed 1.7 meters per second, south-easterly, humidity 82%, pressure 758 millimeters of mercury; uv index: 6, high; daytime water temperature +19°; sunrise 06:47; sunset 19:25; daylight hours: 12 hr 38 min

Weather forecast for Thursday, 12 September: in the morning air temperature +21°, feels like +22°, clear, wind speed 2.2 meters per second, south-easterly, humidity 75%, pressure 760 millimeters of mercury; in the afternoon +28°, feels like +29°, partly cloudy, wind speed 3 meters per second, south-easterly, humidity 43%, pressure 759 millimeters of mercury; in the evening +22°, feels like +22°, overcast, wind speed 1.8 meters per second, south-easterly, humidity 60%, pressure 758 millimeters of mercury; in the night +17°, feels like +17°, overcast, wind speed 1.7 meters per second, southerly, humidity 84%, pressure 759 millimeters of mercury; uv index: 6, high; daytime water temperature +19°; sunrise 06:48; sunset 19:23; daylight hours: 12 hr 35 min

Weather forecast for Friday, 13 September: in the morning air temperature +21°, feels like +22°, overcast, wind speed 2.4 meters per second, easterly, humidity 78%, pressure 760 millimeters of mercury; in the afternoon +27°, feels like +27°, overcast, wind speed 2.7 meters per second, south-easterly, humidity 49%, pressure 758 millimeters of mercury; in the evening +22°, feels like +22°, overcast, wind speed 1.8 meters per second, easterly, humidity 66%, pressure 758 millimeters of mercury; in the night +17°, feels like +17°, overcast, wind speed 1.7 meters per second, south-easterly, humidity 84%, pressure 758 millimeters of mercury; uv index: 0, low; daytime water temperature +19°; sunrise 06:49; sunset 19:22; daylight hours: 12 hr 33 min

Weather forecast for Saturday, 14 September: in the morning air temperature +22°, feels like +23°, light rain, wind speed 2 meters per second, easterly, humidity 77%, pressure 759 millimeters of mercury; in the afternoon +28°, feels like +29°, light rain, wind speed 2.7 meters per second, south-easterly, humidity 53%, pressure 758 millimeters of mercury; in the evening +22°, feels like +22°, light rain, wind speed 2 meters per second, south-easterly, humidity 65%, pressure 756 millimeters of mercury; in the night +18°, feels like +18°, overcast, wind speed 2 meters per second, southerly, humidity 80%, pressure 756 millimeters of mercury; daytime water temperature +20°; sunrise 06:50; sunset 19:20; daylight hours: 12 hr 30 min

Weather forecast for Sunday, 15 September: in the morning air temperature +23°, feels like +24°, light rain, wind speed 2.2 meters per second, south-easterly, humidity 76%, pressure 756 millimeters of mercury; in the afternoon +29°, feels like +31°, light rain, wind speed 2.7 meters per second, south-easterly, humidity 58%, pressure 756 millimeters of mercury; in the evening +23°, feels like +24°, light rain, wind speed 2.2 meters per second, south-easterly, humidity 71%, pressure 755 millimeters of mercury; in the night +20°, feels like +21°, rain, wind speed 2.5 meters per second, south-easterly, humidity 83%, pressure 755 millimeters of mercury; daytime water temperature +20°; sunrise 06:51; sunset 19:18; daylight hours: 12 hr 27 min

Weather forecast for Monday, 16 September: in the morning air temperature +23°, feels like +24°, rain, wind speed 3 meters per second, south-easterly, humidity 80%, pressure 755 millimeters of mercury; in the afternoon +27°, feels like +27°, rain, wind speed 4.1 meters per second, south-easterly, humidity 58%, pressure 755 millimeters of mercury; in the evening +23°, feels like +24°, rain, wind speed 2.9 meters per second, easterly, humidity 71%, pressure 754 millimeters of mercury; in the night +20°, feels like +21°, heavy rain, wind speed 2.7 meters per second, south-easterly, humidity 84%, pressure 756 millimeters of mercury; daytime water temperature +21°; sunrise 06:52; sunset 19:17; daylight hours: 12 hr 25 min

Weather forecast for Tuesday, 17 September: in the morning air temperature +22°, feels like +23°, light rain, wind speed 3 meters per second, south-easterly, humidity 80%, pressure 757 millimeters of mercury; in the afternoon +27°, feels like +28°, light rain, wind speed 3.4 meters per second, south-easterly, humidity 60%, pressure 756 millimeters of mercury; in the evening +22°, feels like +22°, light rain, wind speed 2.9 meters per second, easterly, humidity 67%, pressure 757 millimeters of mercury; in the night +18°, feels like +18°, partly cloudy, wind speed 2.5 meters per second, south-easterly, humidity 84%, pressure 758 millimeters of mercury; daytime water temperature +22°; sunrise 06:53; sunset 19:15; daylight hours: 12 hr 22 min

Weather in Loudoun County — FAQ

What is the weather today in Loudoun County?

The weather in Loudoun County today: clear, with an air temperature of +18°.

What will the weather in Loudoun County be like tomorrow?

The weather in Loudoun County tomorrow: clear, with an air temperature of +20°.

What is the usual weather in Loudoun County in September?

In September, the weather in Loudoun County is usually partly cloudy, with an average air temperature of +24°.

What is the air pollution level in Loudoun County right now?

The air pollution level in Loudoun County is currently low, measuring 39.

What is the coldest month in Loudoun County?

The coldest month in Loudoun County is January, with an average air temperature of +4°.

What is the hottest month in Loudoun County?

The hottest month in Loudoun County is July, with an average air temperature of +29°.