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

50°F

10°C

Humidity 33%
Wind Speed SE 10 mph
Barometer 30.01 in (1016.6 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 13 Jan 11:55 am EST
Extended Forecast for

Mount Vernon VA

  • This Afternoon

    This Afternoon: Sunny, with a high near 51. South wind 7 to 9 mph.

    High: 51 °F

    Sunny

  • Tonight

    Tonight: A slight chance of rain between 2am and 3am. Mostly cloudy, with a low around 40. Southwest wind 7 to 10 mph. Chance of precipitation is 20%.

    Low: 40 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • 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 10 to 15 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 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.

    High: 32 °F

    Chance Snow
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 18.

    Low: 18 °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

This Afternoon
Sunny, with a high near 51. South wind 7 to 9 mph.
Tonight
A slight chance of rain between 2am and 3am. Mostly cloudy, with a low around 40. Southwest wind 7 to 10 mph. Chance of precipitation is 20%.
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 10 to 15 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 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 18.
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 77.11°W (Elev. 36 ft)
Last Update:
9:54 am EST Jan 13, 2026
Forecast Valid:
12pm EST Jan 13, 2026-6pm EST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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