Severe Thunderstorms and Heavy Rain Across the Ohio Valley;

Severe thunderstorms with damaging wind gusts will be possible from the mid-Mississippi Valley into parts of the Ohio Valley and central Appalachians. Heavy rain associated with these storms may lead to considerable flash and urban flooding impacts across portions of the Ohio Valley. Mid-summer heat persists from the Central Plains to the Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Fair

90°F

32°C

Humidity 51%
Wind Speed SE 6 mph
Barometer 29.85 in (1011.0 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 11 Aug 2:55 pm EDT
Extended Forecast for

Mount Vernon VA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 88. West wind around 7 mph.

    High: 88 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 3am.  Mostly cloudy, with a low around 71. Light southwest wind.  Chance of precipitation is 40%.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 88. Northwest wind 3 to 5 mph.

    High: 88 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am.  Mostly cloudy, then gradually becoming clear, with a low around 70. Calm wind.  Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm.  Mostly sunny, with a high near 89. Calm wind becoming west around 6 mph in the afternoon.  Chance of precipitation is 40%.

    High: 89 °F

    Sunny then
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely.  Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

    Low: 72 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 11am.  Partly sunny, with a high near 87. Chance of precipitation is 40%.

    High: 87 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 88. West wind around 7 mph.
Tonight
A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 3am. Mostly cloudy, with a low around 71. Light southwest wind. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 88. Northwest wind 3 to 5 mph.
Wednesday Night
A slight chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, then gradually becoming clear, with a low around 70. Calm wind. Chance of precipitation is 20%.
Thursday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 89. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 40%.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Friday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 87. Chance of precipitation is 40%.
Friday Night
Partly cloudy, with a low around 67.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon VA
 38.72°N 77.11°W (Elev. 36 ft)
2:23 pm EDT Aug 11, 2026
3pm EDT Aug 11, 2026-6pm EDT Aug 18, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database