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.

Overcast

48°F

9°C

Humidity 58%
Wind Speed SE 5 mph
Barometer 29.45 in (997.6 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 14 Jan 6:55 pm EST
Extended Forecast for

3 Miles SE Mount Vernon VA

  • Tonight

    Tonight: A chance of rain, mainly before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 30. South wind 8 to 18 mph becoming northwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 30%.

    Low: 30 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 34. West wind around 16 mph, with gusts as high as 29 mph.

    High: 34 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 22. West wind 9 to 14 mph, with gusts as high as 38 mph.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 39. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 39 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 33. South wind around 8 mph.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain and snow showers before 1pm, then a slight chance of rain showers. Partly sunny, with a high near 47. Chance of precipitation is 30%.

    High: 47 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of rain, mainly before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 30. South wind 8 to 18 mph becoming northwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 34. West wind around 16 mph, with gusts as high as 29 mph.
Thursday Night
Mostly clear, with a low around 22. West wind 9 to 14 mph, with gusts as high as 38 mph.
Friday
Increasing clouds, with a high near 39. South wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 33. South wind around 8 mph.
Saturday
A chance of rain and snow showers before 1pm, then a slight chance of rain showers. Partly sunny, with a high near 47. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 33.
Sunday Night
Mostly clear, with a low around 19.
M.L.King Day
Sunny, with a high near 36.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Mostly clear, with a low around 16.
Wednesday
Mostly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Mount Vernon VA
 38.69°N 77.06°W (Elev. 144 ft)
Last Update:
6:53 pm EST Jan 14, 2026
Forecast Valid:
7pm EST Jan 14, 2026-6pm EST Jan 21, 2026
 
Forecast Discussion
 
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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