National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Fair

31°F

-1°C

Humidity 75%
Wind Speed Calm
Barometer 30.14 in (1021.0 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 12 Jan 9:55 pm EST
Extended Forecast for

Fairfax VA

  • Tonight

    Tonight: Mostly clear, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 50. Light southwest wind becoming south 5 to 10 mph in the morning.

    High: 50 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain, mainly after 1pm. Cloudy, with a high near 51. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 51 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely. Mostly cloudy, with a low around 29. Light and variable wind becoming northwest 6 to 11 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%.

    Low: 29 °F

    Rain Likely

  • Thursday

    Thursday: A chance of rain before 1pm. Partly sunny, with a high near 34. Chance of precipitation is 30%.

    High: 34 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 30. Calm wind.
Tuesday
Sunny, with a high near 50. Light southwest wind becoming south 5 to 10 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 39. Southwest wind 7 to 11 mph, with gusts as high as 21 mph.
Wednesday
A chance of rain, mainly after 1pm. Cloudy, with a high near 51. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 29. Light and variable wind becoming northwest 6 to 11 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 60%.
Thursday
A chance of rain before 1pm. Partly sunny, with a high near 34. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Mostly sunny, with a high near 34.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Partly sunny, with a high near 34.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
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 77.29°W (Elev. 400 ft)
Last Update:
9:53 pm EST Jan 12, 2026
Forecast Valid:
10pm EST Jan 12, 2026-6pm EST Jan 19, 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