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 96%
Wind Speed Calm
Barometer 30.12 in (1020.0 mb)
Dewpoint 28°F (-2°C)
Visibility 7.00 mi
Last update 8 Dec 2:52 am EST
Extended Forecast for

Fairfax VA

  • Overnight

    Overnight: Cloudy, with a low around 28. North wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 28 °F

    Cloudy

  • Monday

    Monday: A chance of snow, mainly between 7am and 4pm. Cloudy, with a high near 31. Northeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

    High: 31 °F

    Chance Snow

  • Monday Night

    Monday Night: Cloudy during the early evening, then gradual clearing, with a low around 18. North wind around 6 mph becoming calm after midnight.

    Low: 18 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 36 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of rain after 1pm. Mostly cloudy, with a high near 48. Chance of precipitation is 20%.

    High: 48 °F

    Cloudy then
    Slight Chance
    Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 28. North wind 8 to 10 mph, with gusts as high as 18 mph.
Monday
A chance of snow, mainly between 7am and 4pm. Cloudy, with a high near 31. Northeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Monday Night
Cloudy during the early evening, then gradual clearing, with a low around 18. North wind around 6 mph becoming calm after midnight.
Tuesday
Mostly sunny, with a high near 36. Light and variable wind becoming south 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 29. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday
A slight chance of rain after 1pm. Mostly cloudy, with a high near 48. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 33.
Thursday
Mostly sunny, with a high near 42.
Thursday Night
Mostly cloudy, with a low around 27.
Friday
Partly sunny, with a high near 40.
Friday Night
A chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 34.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...
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 Dec 8, 2025
Forecast Valid:
3am EST Dec 8, 2025-6pm EST Dec 14, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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