Risks of Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Fire Weather Concerns in Alaska and Southwest

An expansive storm system will bring widespread storms with a threat for flash flooding and severe weather to much of the central to eastern U.S. into early this week. Critical fire weather conditions are expected across interior Alaska this weekend. Elevated fire conditions also expected in the Southwest U.S.. Conditions will remain uncomfortably hot across the southern Plains and the Southeast. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Mostly Cloudy

66°F

19°C

Humidity 68%
Wind Speed Calm
Barometer 29.85 in (1011.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 21 Jun 1:55 am EDT
Extended Forecast for

Potomac Heights MD

  • Overnight

    Overnight: Partly cloudy, with a low around 66. Northwest wind around 6 mph.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84. West wind 7 to 11 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 69. North wind 6 to 8 mph becoming east after midnight.

    Low: 69 °F

    Mostly Cloudy

  • Monday

    Monday: Isolated showers before 11am, then isolated showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm.  High near 89. South wind 9 to 17 mph, with gusts as high as 25 mph.  Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Isolated
    T-storms then
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then isolated showers.  Low around 69. Southwest wind 8 to 13 mph.  Chance of precipitation is 80%.

    Low: 69 °F

    Showers

  • Tuesday

    Tuesday: Isolated showers before 2pm.  Mostly cloudy, with a high near 80. Chance of precipitation is 20%.

    High: 80 °F

    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 66. Northwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 84. West wind 7 to 11 mph.
Sunday Night
Mostly cloudy, with a low around 69. North wind 6 to 8 mph becoming east after midnight.
Monday
Isolated showers before 11am, then isolated showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 89. South wind 9 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm before 2am, then isolated showers. Low around 69. Southwest wind 8 to 13 mph. Chance of precipitation is 80%.
Tuesday
Isolated showers before 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Potomac Heights MD
 38.63°N 77.13°W (Elev. 3 ft)
2:22 am EDT Jun 21, 2026
2am EDT Jun 21, 2026-6pm EDT Jun 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database