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

70°F

21°C

Humidity 36%
Wind Speed S 8 mph
Barometer 29.96 in (1014.8 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 26 Mar 11:55 am EDT
Extended Forecast for

Mount Vernon VA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 81. Southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    High: 81 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 53. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 53 °F

    Mostly Cloudy

  • Friday

    Friday: Rain. Temperature rising to near 66 by 8am, then falling to around 52 during the remainder of the day. North wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 66 °F⇓

    Rain

  • Friday Night

    Friday Night: Rain, mainly before 8pm. Low around 35. Northwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 49. Northwest wind around 11 mph, with gusts as high as 20 mph.

    High: 49 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 81. Southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a low around 53. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Friday
Rain. Temperature rising to near 66 by 8am, then falling to around 52 during the remainder of the day. North wind 9 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain, mainly before 8pm. Low around 35. Northwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Sunny, with a high near 49. Northwest wind around 11 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Partly sunny, with a high near 68.
Monday Night
A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.
Tuesday
A chance of rain. Partly sunny, with a high near 73. Chance of precipitation is 30%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Wednesday
A chance of rain. Partly sunny, with a high near 78. Chance of precipitation is 30%.
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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 ft)
Last Update:
10:57 am EDT Mar 26, 2026
Forecast Valid:
12pm EDT Mar 26, 2026-6pm EDT Apr 1, 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