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

29°F

-2°C

Humidity 39%
Wind Speed S 7 mph
Barometer 30.15 in (1021.4 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 9 Dec 12:52 pm EST
Extended Forecast for

Fairfax VA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 34. South wind 7 to 9 mph.

    High: 34 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. South wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain, mainly before 2pm. Cloudy, with a high near 45. South wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 31. Southwest wind 10 to 13 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 31 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 39. West wind around 14 mph, with gusts as high as 25 mph.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow after 1pm. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.

    High: 37 °F

    Mostly Cloudy
    then Chance
    Snow

  • Friday Night

    Friday Night: A chance of snow before 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 34. South wind 7 to 9 mph.
Tonight
Mostly cloudy, with a low around 27. South wind 9 to 11 mph, with gusts as high as 22 mph.
Wednesday
A chance of rain, mainly before 2pm. Cloudy, with a high near 45. South wind 13 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 31. Southwest wind 10 to 13 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Thursday
Mostly sunny, with a high near 39. West wind around 14 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 25.
Friday
A chance of snow after 1pm. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
Friday Night
A chance of snow before 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 44.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 39.
Sunday Night
Mostly clear, with a low around 17.
Monday
Mostly sunny, with a high near 32.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfax VA
 38.85°N 77.32°W (Elev. 413 ft)
Last Update:
12:53 pm EST Dec 9, 2025
Forecast Valid:
1pm EST Dec 9, 2025-6pm EST Dec 15, 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