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.

A Few Clouds

39°F

4°C

Humidity 70%
Wind Speed S 6 mph
Barometer 30.06 in (1018.4 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 7 Dec 4:52 pm EST
Extended Forecast for

Fairfax VA

  • Tonight

    Tonight: Increasing clouds, with a low around 27. Light and variable wind becoming north 5 to 10 mph after midnight.

    Low: 27 °F

    Increasing
    Clouds

  • 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 20 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 50.

    High: 50 °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
Increasing clouds, with a low around 27. Light and variable wind becoming north 5 to 10 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 20 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 50.
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 77.32°W (Elev. 413 ft)
Last Update:
3:53 pm EST Dec 7, 2025
Forecast Valid:
5pm EST Dec 7, 2025-6pm EST Dec 14, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation