National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Storm and Storm Surge Warnings for the North Carolina Outer Banks; Heat Building in the West

Storm surge flooding and tropical storm conditions are expected in the Outer Banks beginning late Wednesday. Tropical Storm and Storm Surge Warnings are in effect. Tropical storm conditions are possible along the eastern shore of Virginia Thursday. Hurricane Erin will continue to produce life-threatening surf and rip currents along much of the east coast of the U.S. this week. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Light Drizzle Fog/Mist

68°F

20°C

Humidity 95%
Wind Speed Calm
Barometer 29.99 in (1015.8 mb)
Dewpoint 67°F (19°C)
Visibility 4.00 mi
Last update 20 Aug 3:55 am EDT
Extended Forecast for

Mount Vernon VA

  • Overnight

    Overnight: Patchy drizzle and fog. Cloudy, with a low around 68. Light northeast wind.

    Low: 68 °F

    Patchy
    Drizzle and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy drizzle before 8am, then a slight chance of showers after 4pm. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 87. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 87 °F

    Patchy
    Drizzle and
    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 4am. Mostly cloudy, with a low around 71. Northeast wind around 8 mph. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 8am. Mostly cloudy, with a high near 79. Northeast wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 64. North wind 7 to 9 mph.

    Low: 64 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy drizzle and fog. Cloudy, with a low around 68. Light northeast wind.
Wednesday
Patchy drizzle before 8am, then a slight chance of showers after 4pm. Patchy fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 87. Calm wind becoming southeast around 6 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 4am. Mostly cloudy, with a low around 71. Northeast wind around 8 mph. Chance of precipitation is 30%.
Thursday
A chance of showers after 8am. Mostly cloudy, with a high near 79. Northeast wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 64. North wind 7 to 9 mph.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 64.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon VA
 38.72°N 77.08°W (Elev. 13 ft)
Last Update:
1:51 am EDT Aug 20, 2025
Forecast Valid:
4am EDT Aug 20, 2025-6pm EDT Aug 26, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation