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.

Partly Cloudy

12°C

54°F

Humidity 93%
Wind Speed Calm
Barometer 1008.4 mb (29.77 in)
Dewpoint 11°C (52°F)
Visibility 16 km
Last update 14 May 5:55 am EDT
Extended Forecast for

Mount Vernon VA

  • Today

    Today: Scattered showers before 11am, then scattered sprinkles after 2pm. Mostly cloudy, with a high near 18. Northwest wind 13 to 21 km/h, with gusts as high as 35 km/h. Chance of precipitation is 30%.

    High: 18 °C

    Scattered
    Showers then
    Mostly Cloudy

  • Tonight

    Tonight: Scattered sprinkles before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 10. Northwest wind 11 to 16 km/h.

    Low: 10 °C

    Scattered
    Sprinkles

  • Friday

    Friday: Mostly sunny, with a high near 23. Northwest wind 16 to 18 km/h, with gusts as high as 29 km/h.

    High: 23 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 12. Calm wind.

    Low: 12 °C

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 29. Light south wind increasing to 8 to 13 km/h in the morning.

    High: 29 °C

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers before 2am. Partly cloudy, with a low around 18. Chance of precipitation is 20%.

    Low: 18 °C

    Slight Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 33. Chance of precipitation is 30%.

    High: 33 °C

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 19. Chance of precipitation is 30%.

    Low: 19 °C

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 32.

    High: 32 °C

    Sunny

Detailed Forecast

Today
Scattered showers before 11am, then scattered sprinkles after 2pm. Mostly cloudy, with a high near 18. Northwest wind 13 to 21 km/h, with gusts as high as 35 km/h. Chance of precipitation is 30%.
Tonight
Scattered sprinkles before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 10. Northwest wind 11 to 16 km/h.
Friday
Mostly sunny, with a high near 23. Northwest wind 16 to 18 km/h, with gusts as high as 29 km/h.
Friday Night
Partly cloudy, with a low around 12. Calm wind.
Saturday
Mostly sunny, with a high near 29. Light south wind increasing to 8 to 13 km/h in the morning.
Saturday Night
A slight chance of showers before 2am. Partly cloudy, with a low around 18. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 33. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 19. Chance of precipitation is 30%.
Monday
Sunny, with a high near 32.
Monday Night
Mostly clear, with a low around 20.
Tuesday
Sunny, with a high near 33.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
A chance of showers. Mostly sunny, with a high near 32. Chance of precipitation is 40%.
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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 m)
Last Update:
4:53 am EDT May 14, 2026
Forecast Valid:
6am EDT May 14, 2026-6pm EDT May 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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