Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Mostly Cloudy

74°F

23°C

Humidity 83%
Wind Speed Calm
Barometer 29.58 in (1001.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 28 Jul 10:55 pm EDT
Extended Forecast for

Potomac Heights MD

  • Overnight

    Overnight: Mostly clear, with a low around 70. Northwest wind 6 to 9 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 82. Northwest wind 11 to 13 mph, with gusts as high as 20 mph.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70. Northwest wind around 10 mph.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. Northwest wind around 11 mph, with gusts as high as 18 mph.

    High: 82 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 69. Northwest wind 3 to 6 mph.

    Low: 69 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 73. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 70. Northwest wind 6 to 9 mph.
Wednesday
Sunny, with a high near 82. Northwest wind 11 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 70. Northwest wind around 10 mph.
Thursday
Sunny, with a high near 82. Northwest wind around 11 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 69. Northwest wind 3 to 6 mph.
Friday
Sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 72.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 20%.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Monday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Potomac Heights MD
 38.61°N 77.13°W (Elev. 49 ft)
10:53 pm EDT Jul 28, 2026
12am EDT Jul 29, 2026-6pm EDT Aug 4, 2026
 
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Additional Resources

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