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

26°F

-3°C

Humidity 75%
Wind Speed S 3 mph
Barometer 30.23 in (1023.7 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 5 Jan 2:52 am EST
Extended Forecast for

Fairfax VA

  • Overnight

    Overnight: Mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 43. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 43 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. South wind 5 to 7 mph becoming calm after midnight.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 53. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 53 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 44. West wind 6 to 8 mph.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Mostly cloudy, with a low around 26. Calm wind.
Monday
Mostly cloudy, with a high near 43. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 35. South wind 5 to 7 mph becoming calm after midnight.
Tuesday
Mostly cloudy, with a high near 53. Calm wind becoming south 5 to 8 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 44. West wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 57.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
A chance of rain after 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Friday
A chance of rain. Mostly cloudy, with a high near 64. Chance of precipitation is 50%.
Friday Night
Rain likely. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Saturday
Rain likely. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 45.
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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:
12:53 am EST Jan 5, 2026
Forecast Valid:
3am EST Jan 5, 2026-6pm EST Jan 11, 2026
 
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