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

46°F

8°C

Humidity 96%
Wind Speed Calm
Barometer 29.87 in (1011.6 mb)
Dewpoint 45°F (7°C)
Visibility 7.00 mi
Last update 10 Jan 5:52 pm EST
Extended Forecast for

Fairfax VA

  • Tonight

    Tonight: A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 38. North wind 5 to 11 mph becoming southwest in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 50%.

    Low: 38 °F

    Chance Rain
    then Mostly
    Cloudy

  • Sunday

    Sunday: A slight chance of rain and snow showers between 1pm and 4pm. Mostly sunny, with a high near 44. Breezy, with a west wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 20%.

    High: 44 °F

    Mostly Sunny
    then Slight
    Chance
    Rain/Snow and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 29. West wind 13 to 18 mph, with gusts as high as 37 mph.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 45. West wind 7 to 10 mph, with gusts as high as 21 mph.

    High: 45 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 29. Southwest wind around 6 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 51.

    High: 51 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
A chance of rain, mainly before 11pm. Mostly cloudy, with a low around 38. North wind 5 to 11 mph becoming southwest in the evening. Winds could gust as high as 24 mph. Chance of precipitation is 50%.
Sunday
A slight chance of rain and snow showers between 1pm and 4pm. Mostly sunny, with a high near 44. Breezy, with a west wind 10 to 15 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 29. West wind 13 to 18 mph, with gusts as high as 37 mph.
Monday
Sunny, with a high near 45. West wind 7 to 10 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 29. Southwest wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Mostly cloudy, with a high near 51.
Wednesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Thursday
A chance of rain and snow before 1pm. Mostly sunny, with a high near 36. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 37.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 41.
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:
3:53 pm EST Jan 10, 2026
Forecast Valid:
6pm EST Jan 10, 2026-6pm EST Jan 17, 2026
 
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