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

30°F

-1°C

Humidity 41%
Wind Speed NW 15 G 24 mph
Barometer 30.23 in (1024.0 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 17 Mar 9:52 pm EDT
Extended Forecast for

Fairfax VA

  • Tonight

    Tonight: Mostly clear, with a low around 27. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 42. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 42 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 30. South wind around 6 mph.

    Low: 30 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 54. South wind 5 to 7 mph.

    High: 54 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A slight chance of rain. Mostly cloudy, with a low around 38. Southeast wind around 5 mph. Chance of precipitation is 20%.

    Low: 38 °F

    Slight Chance
    Rain

  • Friday

    Friday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 27. Northwest wind 5 to 10 mph, with gusts as high as 21 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 42. Light and variable wind becoming south around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 30. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 54. South wind 5 to 7 mph.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 38. Southeast wind around 5 mph. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 58.
Friday Night
Mostly cloudy, with a low around 43.
Saturday
Partly sunny, with a high near 62.
Saturday Night
Mostly cloudy, with a low around 45.
Sunday
Partly sunny, with a high near 70.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 57.
Monday Night
Mostly clear, with a low around 31.
Tuesday
Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fairfax VA
 38.85°N 77.32°W (Elev. 413 ft)
Last Update:
7:53 pm EDT Mar 17, 2026
Forecast Valid:
10pm EDT Mar 17, 2026-6pm EDT Mar 24, 2026
 
Forecast Discussion
 
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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