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

35°F

2°C

Humidity 54%
Wind Speed Calm
Barometer 30.21 in (1023.4 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 4 Jan 8:55 pm EST
Extended Forecast for

Mount Vernon VA

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 46. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 46 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 36. South wind around 6 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 55. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 55 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 44. Southwest wind around 6 mph.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Mostly cloudy, with a low around 26. Calm wind.
Monday
Partly sunny, with a high near 46. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 36. South wind around 6 mph becoming calm in the evening.
Tuesday
Mostly cloudy, with a high near 55. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 44. Southwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
Mostly sunny, with a high near 58.
Thursday Night
A chance of rain after 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Friday
A chance of rain. Mostly cloudy, with a high near 61. Chance of precipitation is 50%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Saturday
A chance of rain. Mostly cloudy, with a high near 61. Chance of precipitation is 40%.
Saturday Night
Partly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 45.
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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:
6:53 pm EST Jan 4, 2026
Forecast Valid:
9pm EST Jan 4, 2026-6pm EST Jan 11, 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