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

43°F

6°C

Humidity 37%
Wind Speed NW 9 mph
Barometer 30.03 in (1017.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 27 Nov 3:55 pm EST
Extended Forecast for

Mount Vernon VA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 30. West wind 8 to 11 mph, with gusts as high as 18 mph.

    Low: 30 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 43. West wind 11 to 17 mph, with gusts as high as 31 mph.

    High: 43 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 27. West wind 6 to 8 mph.

    Low: 27 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 43. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 43 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31. Calm wind becoming south around 5 mph after midnight.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and snow before 1pm, then rain likely. Cloudy, with a high near 45. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: A chance of rain before 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Chance Rain

  • Monday

    Monday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain and snow after 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 30. West wind 8 to 11 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 43. West wind 11 to 17 mph, with gusts as high as 31 mph.
Friday Night
Mostly clear, with a low around 27. West wind 6 to 8 mph.
Saturday
Sunny, with a high near 43. Northwest wind around 6 mph becoming calm in the afternoon.
Saturday Night
Mostly cloudy, with a low around 31. Calm wind becoming south around 5 mph after midnight.
Sunday
A chance of rain and snow before 1pm, then rain likely. Cloudy, with a high near 45. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday Night
A chance of rain before 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 44.
Monday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Tuesday
Rain likely. Cloudy, with a high near 41. Chance of precipitation is 70%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon VA
 38.72°N 77.11°W (Elev. 36 ft)
Last Update:
3:53 pm EST Nov 27, 2025
Forecast Valid:
4pm EST Nov 27, 2025-6pm EST Dec 4, 2025
 
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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