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

Dangerous Heat in the West; Coastal Flooding & High Rip Current Risk into the Weekend on the East Coast; Flash Flooding Possible in the Southeast

A dangerous, record heat wave continues for the Desert Southwest and the Central Valley of California through Saturday, and the Pacific Northwest through Tuesday. Coastal flooding is expected through tonight at high tide along the Eastern Seaboard from Erin, while the high rip current risk and dangerous surf continue through the weekend. Flash flooding possible today in Georgia and South Carolina. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

80°F

27°C

Humidity 45%
Wind Speed Vrbl 3 mph
Barometer 30.09 in (1019.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 22 Aug 12:56 pm EDT
Extended Forecast for

2 Miles NNW Colesville MD

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. Light northeast wind.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 60. Southeast wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 82. Calm wind becoming south 5 to 9 mph in the morning.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 67. South wind 6 to 9 mph.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 82. South wind 6 to 8 mph. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 80. Light northeast wind.
Tonight
Clear, with a low around 60. Southeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 82. Calm wind becoming south 5 to 9 mph in the morning.
Saturday Night
Partly cloudy, with a low around 67. South wind 6 to 9 mph.
Sunday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 82. South wind 6 to 8 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Colesville MD
 39.11°N 77.02°W (Elev. 436 ft)
Last Update:
10:29 am EDT Aug 22, 2025
Forecast Valid:
1pm EDT Aug 22, 2025-6pm EDT Aug 28, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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