National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Fair

29°F

-2°C

Humidity 85%
Wind Speed SE 3 mph
Barometer 30.11 in (1019.8 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 3 Dec 7:52 pm EST
Extended Forecast for

Fairfax VA

  • Tonight

    Tonight: Mostly clear, with a low around 26. Light and variable wind.

    Low: 26 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 42. Light northwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 24 mph.

    High: 42 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 22. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 22 °F

    Increasing
    Clouds

  • Friday

    Friday: A chance of snow. Cloudy, with a high near 34. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 50%.

    High: 34 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow before 10pm, then a chance of snow and freezing rain between 10pm and 1am, then a slight chance of freezing rain after 1am. Mostly cloudy, with a low around 25. Calm wind. Chance of precipitation is 30%.

    Low: 25 °F

    Chance Wintry
    Mix

  • Saturday

    Saturday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 26. Light and variable wind.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 42. Light northwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 24 mph.
Thursday Night
Increasing clouds, with a low around 22. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Friday
A chance of snow. Cloudy, with a high near 34. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 50%.
Friday Night
A chance of snow before 10pm, then a chance of snow and freezing rain between 10pm and 1am, then a slight chance of freezing rain after 1am. Mostly cloudy, with a low around 25. Calm wind. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
Partly sunny, with a high near 42.
Sunday Night
Mostly cloudy, with a low around 27.
Monday
Partly sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 39.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Partly sunny, with a high near 44.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfax VA
 38.85°N 77.29°W (Elev. 400 ft)
Last Update:
6:52 pm EST Dec 3, 2025
Forecast Valid:
8pm EST Dec 3, 2025-6pm EST Dec 10, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation