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

Hazardous Weather Conditions

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

Thunderstorm Heavy Rain

78°F

26°C

Humidity 87%
Wind Speed SW 9 mph
Barometer 29.91 in (1013.1 mb)
Dewpoint 73°F (23°C)
Visibility 1.63 mi
Heat Index80°F (27°C)
Last update 16 Aug 8:55 pm EDT
Extended Forecast for

Potomac Heights MD

Flood Watch until August 17, 03:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until August 17, 03:00am

    NOW until 3:00am Mon

    Flood Watch

  • Tonight

    Low: 72 °F

    Severe
    Thunderstorms

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Northwest wind 5 to 8 mph. Chance of precipitation is 30%.

    High: 91 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Light northwest wind. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88. North wind 5 to 7 mph.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 50%.

    High: 87 °F

    Slight Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Tonight
Showers and thunderstorms likely before 2am, then a slight chance of showers. Some of the storms could be severe. Mostly cloudy, with a low around 72. Southwest wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Northwest wind 5 to 8 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Light northwest wind. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 88. North wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 67. Calm wind.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
Friday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Potomac Heights MD
 38.58°N 77.11°W (Elev. 49 ft)
Last Update:
8:01 pm EDT Aug 16, 2026
Forecast Valid:
10pm EDT Aug 16, 2026-6pm EDT Aug 23, 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