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.

Mostly Cloudy

37°F

3°C

Humidity 73%
Wind Speed Calm
Barometer 30.21 in (1023.3 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 28 Dec 3:55 am EST
Extended Forecast for

3 Miles SE Mount Vernon VA

  • Today

    Today: A slight chance of rain between 1pm and 4pm. Cloudy, with a high near 45. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 20%.

    High: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tonight

    Tonight: Cloudy, with a temperature rising to around 50 by 4am. South wind 9 to 13 mph, with gusts as high as 26 mph.

    Low: 42 °F⇑

    Cloudy

  • Monday

    Monday: A chance of rain, mainly between 7am and 1pm. Partly sunny, with a high near 63. Breezy, with a southwest wind 14 to 20 mph becoming west in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 40%.

    High: 63 °F

    Chance Rain
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 28. West wind 15 to 17 mph, with gusts as high as 36 mph.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 37. Breezy, with a west wind 16 to 20 mph, with gusts as high as 36 mph.

    High: 37 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Mostly cloudy, with a high near 43.

    High: 43 °F

    Mostly Cloudy

Detailed Forecast

Today
A slight chance of rain between 1pm and 4pm. Cloudy, with a high near 45. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 20%.
Tonight
Cloudy, with a temperature rising to around 50 by 4am. South wind 9 to 13 mph, with gusts as high as 26 mph.
Monday
A chance of rain, mainly between 7am and 1pm. Partly sunny, with a high near 63. Breezy, with a southwest wind 14 to 20 mph becoming west in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 40%.
Monday Night
Mostly clear, with a low around 28. West wind 15 to 17 mph, with gusts as high as 36 mph.
Tuesday
Mostly sunny, with a high near 37. Breezy, with a west wind 16 to 20 mph, with gusts as high as 36 mph.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Mostly sunny, with a high near 45.
Wednesday Night
Mostly cloudy, with a low around 30.
New Year's Day
Mostly cloudy, with a high near 43.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Sunny, with a high near 39.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 44.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Mount Vernon VA
 38.69°N 77.06°W (Elev. 144 ft)
Last Update:
3:54 am EST Dec 28, 2025
Forecast Valid:
4am EST Dec 28, 2025-6pm EST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation