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.

Partly Cloudy

35°F

2°C

Humidity 48%
Wind Speed SE 5 mph
Barometer 30.32 in (1027.1 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 18 Mar 9:55 pm EDT
Extended Forecast for

Annandale VA

  • Tonight

    Tonight: Mostly clear early, then becoming mostly cloudy, with a low around 32. South wind around 5 mph.

    Low: 32 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 54. South wind 5 to 7 mph.

    High: 54 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 39. Light south wind.

    Low: 39 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 63. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 63 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 51. South wind around 8 mph. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers before 8am. Partly sunny, with a high near 69. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers then
    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain after 8pm. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.

    Low: 47 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear early, then becoming mostly cloudy, with a low around 32. South wind around 5 mph.
Thursday
Partly sunny, with a high near 54. South wind 5 to 7 mph.
Thursday Night
Partly cloudy, with a low around 39. Light south wind.
Friday
Partly sunny, with a high near 63. Calm wind becoming south 5 to 8 mph in the afternoon.
Friday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 51. South wind around 8 mph. Chance of precipitation is 60%.
Saturday
A chance of showers before 8am. Partly sunny, with a high near 69. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 48.
Sunday
Partly sunny, with a high near 73.
Sunday Night
A chance of rain after 8pm. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 56.
Monday Night
Mostly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Annandale VA
 38.84°N 77.21°W (Elev. 299 ft)
Last Update:
7:53 pm EDT Mar 18, 2026
Forecast Valid:
10pm EDT Mar 18, 2026-6pm EDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation