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

67°F

19°C

Humidity 82%
Wind Speed NW 5 mph
Barometer 30.07 in (1018.5 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 21 Aug 7:55 am EDT
Extended Forecast for

Annandale VASimilar City Names

  • Today

    Today: Mostly sunny, with a high near 83. North wind around 6 mph.

    High: 83 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 67. Light east wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Mostly Cloudy
    then Showers
    Likely

  • Saturday

    Saturday: Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 5pm, then a chance of showers and thunderstorms after 5pm. High near 79. Northeast wind 3 to 6 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    High: 79 °F

    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly between 1am and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. West wind 3 to 8 mph. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 83. North wind around 6 mph.
Tonight
A chance of showers and thunderstorms between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 67. Light east wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 5pm, then a chance of showers and thunderstorms after 5pm. High near 79. Northeast wind 3 to 6 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Saturday Night
A chance of showers and thunderstorms, mainly between 1am and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 40%.
Sunday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. West wind 3 to 8 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 64.
Monday
Sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Annandale VASimilar City Names
 38.84°N 77.21°W (Elev. 299 ft)
Last Update:
7:52 am EDT Aug 21, 2026
Forecast Valid:
8am EDT Aug 21, 2026-6pm EDT Aug 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation