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

30°F

-1°C

Humidity 85%
Wind Speed Calm
Barometer 30.11 in (1020.0 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 13 Jan 8:55 am EST
Extended Forecast for

Mount Vernon VA

  • Today

    Today: Sunny, with a high near 51. Light south wind increasing to 5 to 9 mph in the morning.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. Southwest wind 7 to 10 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain, mainly after 1pm. Cloudy, with a high near 53. South wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 53 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 27. Light and variable wind becoming northwest 9 to 14 mph in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 50%.

    Low: 27 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of snow before 7am. Partly sunny, with a high near 32. Northwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    High: 32 °F

    Chance Snow
    then Mostly
    Sunny

  • Thursday Night

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

    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 28.

    Low: 28 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 51. Light south wind increasing to 5 to 9 mph in the morning.
Tonight
Mostly cloudy, with a low around 41. Southwest wind 7 to 10 mph.
Wednesday
A chance of rain, mainly after 1pm. Cloudy, with a high near 53. South wind 5 to 7 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of rain before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 27. Light and variable wind becoming northwest 9 to 14 mph in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 50%.
Thursday
A chance of snow before 7am. Partly sunny, with a high near 32. Northwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 19.
Friday
Mostly sunny, with a high near 36.
Friday Night
Partly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 44.
Saturday Night
Mostly cloudy, with a low around 25.
Sunday
Partly sunny, with a high near 36.
Sunday Night
Partly cloudy, with a low around 20.
M.L.King Day
Mostly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon VA
 38.72°N 77.08°W (Elev. 13 ft)
Last Update:
6:53 am EST Jan 13, 2026
Forecast Valid:
9am EST Jan 13, 2026-6pm EST Jan 19, 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