Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

A Few Clouds

72°F

22°C

Humidity 95%
Wind Speed Calm
Barometer 29.87 in (1011.7 mb)
Dewpoint 71°F (22°C)
Visibility 8.00 mi
Last update 4 Sep 9:55 pm EDT
Extended Forecast for

Accokeek MD

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 4am, then a slight chance of showers between 4am and 5am.  Mostly cloudy, with a low around 72. Light west wind.  Chance of precipitation is 20%.

    Low: 72 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 10am, then a slight chance of showers and thunderstorms after 2pm.  Mostly cloudy, with a high near 84. North wind around 6 mph.  Chance of precipitation is 20%.

    High: 84 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am.  Mostly cloudy, with a low around 66. Light east wind.  Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 82. Northeast wind around 7 mph.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 62. Light east wind.

    Low: 62 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 4am, then a slight chance of showers between 4am and 5am. Mostly cloudy, with a low around 72. Light west wind. Chance of precipitation is 20%.
Saturday
A slight chance of showers before 10am, then a slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 84. North wind around 6 mph. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Mostly cloudy, with a low around 66. Light east wind. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 82. Northeast wind around 7 mph.
Sunday Night
Partly cloudy, with a low around 62. Light east wind.
Labor Day
Sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 73.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
Friday
Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Accokeek MD
 38.67°N 77.03°W (Elev. 148 ft)
7:53 pm EDT Sep 4, 2026
10pm EDT Sep 4, 2026-6pm EDT Sep 11, 2026
 
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Additional Resources

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