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

52°F

11°C

Humidity 30%
Wind Speed S 5 mph
Barometer 29.69 in (1005.7 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 14 Jan 1:55 am EST
Extended Forecast for

Mount Vernon VA

  • Overnight

    Overnight: Mostly cloudy, with a low around 41. Southwest wind around 8 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 53. South wind 5 to 7 mph.

    High: 53 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Rain likely, mainly between 1am and 4am. Cloudy, with a low around 25. Light and variable wind becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 25 °F

    Rain Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 32. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 32 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 19. West wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 19 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain and snow before 1pm. Partly sunny, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 41. Southwest wind around 8 mph.
Wednesday
Mostly cloudy, with a high near 53. South wind 5 to 7 mph.
Wednesday Night
Rain likely, mainly between 1am and 4am. Cloudy, with a low around 25. Light and variable wind becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly sunny, with a high near 32. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday Night
Mostly clear, with a low around 19. West wind 6 to 10 mph, with gusts as high as 18 mph.
Friday
Mostly sunny, with a high near 36.
Friday Night
Partly cloudy, with a low around 30.
Saturday
A chance of rain and snow before 1pm. Partly sunny, with a high near 45. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Mostly clear, with a low around 19.
M.L.King Day
Mostly sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 30.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon VA
 38.72°N 77.11°W (Elev. 36 ft)
Last Update:
12:53 am EST Jan 14, 2026
Forecast Valid:
2am EST Jan 14, 2026-6pm EST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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