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

39°F

4°C

Humidity 86%
Wind Speed Calm
Barometer 30.25 in (1024.7 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 8 Jan 8:55 pm EST
Extended Forecast for

Annandale VA

  • Tonight

    Tonight: Partly cloudy, with a low around 39. South wind 3 to 5 mph.

    Low: 39 °F

    Partly Cloudy

  • Friday

    Friday: A chance of rain, mainly after 4pm. Increasing clouds, with a high near 56. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 56 °F

    Partly Sunny
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain likely, mainly after 1am. Cloudy, with a low around 49. South wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 49 °F

    Rain Likely

  • Saturday

    Saturday: Rain. High near 56. Northeast wind 5 to 7 mph becoming southeast in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 56 °F

    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly before 1am. Cloudy, with a low around 43. Southwest wind 6 to 8 mph becoming northwest after midnight. Chance of precipitation is 70%.

    Low: 43 °F

    Rain Likely

  • Sunday

    Sunday: A slight chance of rain before 1pm. Partly sunny, with a high near 50. Chance of precipitation is 20%.

    High: 50 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 43.

    High: 43 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 39. South wind 3 to 5 mph.
Friday
A chance of rain, mainly after 4pm. Increasing clouds, with a high near 56. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Friday Night
Rain likely, mainly after 1am. Cloudy, with a low around 49. South wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Rain. High near 56. Northeast wind 5 to 7 mph becoming southeast in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday Night
Rain likely, mainly before 1am. Cloudy, with a low around 43. Southwest wind 6 to 8 mph becoming northwest after midnight. Chance of precipitation is 70%.
Sunday
A slight chance of rain before 1pm. Partly sunny, with a high near 50. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 30.
Monday
Sunny, with a high near 43.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Sunny, with a high near 50.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 48.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Annandale VA
 38.82°N 77.21°W (Elev. 331 ft)
Last Update:
8:57 pm EST Jan 8, 2026
Forecast Valid:
9pm EST Jan 8, 2026-6pm EST Jan 15, 2026
 
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Additional Resources

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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