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

34°F

1°C

Humidity 85%
Wind Speed SW 3 mph
Barometer 30.08 in (1018.9 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 7 Dec 6:52 pm EST
Extended Forecast for

Fairfax VA

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Calm wind becoming north 5 to 9 mph after midnight.

    Low: 27 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of snow between 8am and 3pm. Mostly cloudy, with a high near 32. North wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 32 °F

    Slight Chance
    Snow

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 18. North wind around 6 mph becoming calm in the evening.

    Low: 18 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 37 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 49.

    High: 49 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.

    Low: 29 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 27. Calm wind becoming north 5 to 9 mph after midnight.
Monday
A slight chance of snow between 8am and 3pm. Mostly cloudy, with a high near 32. North wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 18. North wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 37. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Tuesday Night
Mostly cloudy, with a low around 31. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly cloudy, with a high near 49.
Wednesday Night
Mostly cloudy, with a low around 34.
Thursday
Partly sunny, with a high near 44.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Friday
A chance of rain and snow before 1pm. Partly sunny, with a high near 39. Chance of precipitation is 30%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 21. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 33.
Saturday Night
Partly cloudy, with a low around 20.
Sunday
Mostly sunny, with a high near 31.
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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:
6:53 pm EST Dec 7, 2025
Forecast Valid:
7pm EST Dec 7, 2025-6pm EST Dec 14, 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