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

Heavy Rain and Flooding Possible in the Southwest U.S, Ohio Valley, and Hawaii

Heavy rainfall is expected to continue through Thursday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. Heavy rain and flash flooding is also expected over the southern Appalachians and Ohio Valley. Tropical Depression 15-E, southeast of Hawaii, is expected to bring heavy rain beginning today to the Big Island and Maui. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

62°F

17°C

Humidity 80%
Wind Speed Vrbl 6 mph
Barometer 30.38 in (1030.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 23 Sep 2:56 pm EDT
Extended Forecast for

3 Miles WSW North Potomac MD

  • Tonight

    Tonight: Mostly cloudy, with a low around 50. Northeast wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 65. Northeast wind around 11 mph, with gusts as high as 20 mph.

    High: 65 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. North wind 5 to 7 mph.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 69. North wind 10 to 13 mph, with gusts as high as 24 mph.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 52. North wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 50. Northeast wind 8 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 65. Northeast wind around 11 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 48. North wind 5 to 7 mph.
Friday
Sunny, with a high near 69. North wind 10 to 13 mph, with gusts as high as 24 mph.
Friday Night
Mostly clear, with a low around 52. North wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
Mostly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW North Potomac MD
 39.07°N 77.31°W (Elev. 397 ft)
Last Update:
2:22 pm EDT Sep 23, 2026
Forecast Valid:
3pm EDT Sep 23, 2026-6pm EDT Sep 30, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation