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.

Overcast

37°F

3°C

Humidity 46%
Wind Speed S 8 mph
Barometer 30.47 in (1031.9 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 29 Nov 9:52 pm EST
Extended Forecast for

Fairfax VA

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. South wind 5 to 7 mph.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain between 9am and 3pm. Mostly cloudy, with a high near 46. South wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.

    High: 46 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 30 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 43. Northwest wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 43 °F

    Sunny

  • Monday Night

    Monday Night: A chance of rain, snow, and sleet after 1am. Mostly cloudy, with a low around 30. Light and variable wind. Chance of precipitation is 50%.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Wintry Mix

  • Tuesday

    Tuesday: A chance of rain, snow, and sleet before 7am, then rain, possibly mixed with snow between 7am and 10am, then rain after 10am. High near 40. Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.

    High: 40 °F

    Wintry Mix
    then Rain

  • Tuesday Night

    Tuesday Night: A chance of rain before 1am. Partly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance Rain

  • Wednesday

    Wednesday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 31. South wind 5 to 7 mph.
Sunday
A chance of rain between 9am and 3pm. Mostly cloudy, with a high near 46. South wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Sunday Night
Partly cloudy, with a low around 30. Northwest wind 6 to 11 mph, with gusts as high as 21 mph.
Monday
Sunny, with a high near 43. Northwest wind 5 to 10 mph, with gusts as high as 18 mph.
Monday Night
A chance of rain, snow, and sleet after 1am. Mostly cloudy, with a low around 30. Light and variable wind. Chance of precipitation is 50%.
Tuesday
A chance of rain, snow, and sleet before 7am, then rain, possibly mixed with snow between 7am and 10am, then rain after 10am. High near 40. Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.
Tuesday Night
A chance of rain before 1am. Partly cloudy, with a low around 28. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 42.
Wednesday Night
Partly cloudy, with a low around 27.
Thursday
Mostly sunny, with a high near 44.
Thursday Night
Partly cloudy, with a low around 24.
Friday
Mostly cloudy, with a high near 38.
Friday Night
A chance of rain. Mostly cloudy, with a low around 29. Chance of precipitation is 50%.
Saturday
A chance of rain. Partly sunny, with a high near 40. Chance of precipitation is 30%.
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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:
9:52 pm EST Nov 29, 2025
Forecast Valid:
10pm EST Nov 29, 2025-6pm EST Dec 6, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation