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

83°F

28°C

Humidity 69%
Wind Speed Calm
Barometer 30.02 in (1016.8 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 14 Aug 1:55 pm EDT
Extended Forecast for

Annandale VA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Cloudy, with a high near 85. North wind 3 to 5 mph. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 88. Northeast wind around 5 mph becoming east in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 71. Light southeast wind.

    Low: 71 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, 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 likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely

  • Monday

    Monday: A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 20%.

    High: 89 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Cloudy, with a high near 85. North wind 3 to 5 mph. Chance of precipitation is 40%.
Tonight
A chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and 10pm. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 88. Northeast wind around 5 mph becoming east in the afternoon.
Saturday Night
Partly cloudy, with a low around 71. Light southeast wind.
Sunday
A chance of showers, 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 likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Monday
A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 71.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Sunny, with a high near 89.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Annandale VA
 38.82°N 77.21°W (Elev. 331 ft)
Last Update:
2:23 pm EDT Aug 14, 2026
Forecast Valid:
2pm 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