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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Current conditions at

Fort Belvoir (KDAA)

Lat: 38.72°NLon: 77.18°WElev: 69ft.

A Few Clouds

71°F

22°C

Humidity 75%
Wind Speed Calm
Barometer 29.77 in (1008.3 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 30 Jul 12:55 am EDT
Extended Forecast for

Potomac Heights MD

  • Overnight

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

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Northwest wind around 11 mph, with gusts as high as 18 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 71. North wind 3 to 6 mph.

    Low: 71 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 86. Light northwest wind.

    High: 86 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 72. Southeast wind 3 to 5 mph.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.

    High: 83 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 70. Northwest wind around 10 mph.
Thursday
Sunny, with a high near 84. Northwest wind around 11 mph, with gusts as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 71. North wind 3 to 6 mph.
Friday
Sunny, with a high near 86. Light northwest wind.
Friday Night
Partly cloudy, with a low around 72. Southeast wind 3 to 5 mph.
Saturday
Partly sunny, with a high near 87.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 20%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
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 pm EDT Jul 29, 2026
Forecast Valid:
1am EDT Jul 30, 2026-6pm EDT Aug 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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