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.

Mostly Cloudy

74°F

23°C

Humidity 93%
Wind Speed Calm
Barometer 29.97 in (1015.1 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 14 Aug 5:55 am EDT
Extended Forecast for

Annandale VA

  • Today

    Today: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 86. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 40%.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87. Light and variable wind becoming northeast around 5 mph in the morning.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Partly cloudy, with a low around 71. Light south wind. Chance of precipitation is 30%.

    Low: 71 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 87. South wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

    High: 87 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 30%.

    High: 90 °F

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Today
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 86. Calm wind becoming northeast around 5 mph in the afternoon. Chance of precipitation is 40%.
Tonight
A chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 87. Light and variable wind becoming northeast around 5 mph in the morning.
Saturday Night
A chance of showers after 2am. Partly cloudy, with a low around 71. Light south wind. Chance of precipitation is 30%.
Sunday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 87. South wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Sunday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Annandale VA
 38.84°N 77.21°W (Elev. 299 ft)
Last Update:
4:53 am EDT Aug 14, 2026
Forecast Valid:
6am EDT Aug 14, 2026-6pm EDT Aug 20, 2026
 
Forecast Discussion
 
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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