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.

Mostly Cloudy

36°F

2°C

Humidity 70%
Wind Speed SW 9 mph
Barometer 30.03 in (1017.1 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 17 Jan 11:52 am EST
Extended Forecast for

Fairfax VA

  • This Afternoon

    This Afternoon: A slight chance of rain before 1pm. Cloudy early, then becoming mostly sunny, with a high near 46. Southwest wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 46 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: A chance of rain between 2am and 4am, then a chance of snow after 4am. Increasing clouds, with a low around 31. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 40%.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of light snow. Cloudy, with a high near 34. North wind 5 to 8 mph. Chance of precipitation is 40%.

    High: 34 °F

    Chance Light
    Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 21. Northwest wind around 6 mph becoming calm in the evening.

    Low: 21 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 38. Southwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 38 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 27.

    High: 27 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 15.

    Low: 15 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 39.

    High: 39 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of rain before 1pm. Cloudy early, then becoming mostly sunny, with a high near 46. Southwest wind 6 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Tonight
A chance of rain between 2am and 4am, then a chance of snow after 4am. Increasing clouds, with a low around 31. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 40%.
Sunday
A chance of light snow. Cloudy, with a high near 34. North wind 5 to 8 mph. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 21. Northwest wind around 6 mph becoming calm in the evening.
M.L.King Day
Sunny, with a high near 38. Southwest wind 6 to 13 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 15.
Tuesday
Sunny, with a high near 27.
Tuesday Night
Mostly clear, with a low around 15.
Wednesday
Sunny, with a high near 39.
Wednesday Night
Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 44.
Thursday Night
Mostly cloudy, with a low around 25.
Friday
Mostly sunny, with a high near 36.
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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:
9:53 am EST Jan 17, 2026
Forecast Valid:
12pm EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation