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

40°F

4°C

Humidity 73%
Wind Speed N 3 mph
Barometer 29.97 in (1015.2 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 27 Dec 7:55 am EST
Extended Forecast for

Mount Vernon VA

  • Today

    Today: Mostly sunny, with a high near 45. North wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 45 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. Northeast wind around 5 mph becoming calm in the evening.

    Low: 30 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain after 1pm. Mostly cloudy, with a high near 48. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 20%.

    High: 48 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Sunday Night

    Sunday Night: A chance of rain after 1am. Cloudy, with a low around 44. South wind 8 to 11 mph. Chance of precipitation is 30%.

    Low: 44 °F

    Cloudy then
    Chance Rain

  • Monday

    Monday: A chance of rain. Mostly cloudy, with a high near 65. Southwest wind 11 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 50%.

    High: 65 °F

    Chance Rain

  • Monday Night

    Monday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 45. North wind 5 to 10 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 30. Northeast wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of rain after 1pm. Mostly cloudy, with a high near 48. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 20%.
Sunday Night
A chance of rain after 1am. Cloudy, with a low around 44. South wind 8 to 11 mph. Chance of precipitation is 30%.
Monday
A chance of rain. Mostly cloudy, with a high near 65. Southwest wind 11 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 50%.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 38.
Tuesday Night
Mostly clear, with a low around 25.
Wednesday
Partly sunny, with a high near 44.
Wednesday Night
Mostly cloudy, with a low around 28.
New Year's Day
Mostly cloudy, with a high near 42.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Sunny, with a high near 33.
Basemap Options
Click map to change the forecast location
Loading map...
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 am EST Dec 27, 2025
Forecast Valid:
8am EST Dec 27, 2025-6pm EST Jan 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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