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

Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Fair

83°F

28°C

Humidity 43%
Wind Speed NW 6 mph
Barometer 29.95 in (1014.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 6 Sep 12:55 pm EDT
Extended Forecast for

Potomac Heights MD

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 83. Northeast wind around 6 mph.

    High: 83 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 67. Light east wind.

    Low: 67 °F

    Mostly Clear

  • Labor Day

    Labor Day: Mostly sunny, with a high near 82. Northeast wind 3 to 5 mph.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65. Light and variable wind.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 84. Light south wind.

    High: 84 °F

    Sunny

  • Tuesday Night

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

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 40%.

    High: 88 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 83. Northeast wind around 6 mph.
Tonight
Mostly clear, with a low around 67. Light east wind.
Labor Day
Mostly sunny, with a high near 82. Northeast wind 3 to 5 mph.
Monday Night
Partly cloudy, with a low around 65. Light and variable wind.
Tuesday
Sunny, with a high near 84. Light south wind.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 80.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Potomac Heights MD
 38.61°N 77.13°W (Elev. 49 ft)
Last Update:
10:53 am EDT Sep 6, 2026
Forecast Valid:
1pm EDT Sep 6, 2026-6pm EDT Sep 12, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation