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

Hurricane Erin Moving Away from the North Carolina Coast, Dangerous Surf & Rip Currents Continue; Hazardous Heat out West

Tropical storm conditions, storm surge flooding and coastal flooding continue today across the Outer Banks and portions of the Mid-Atlantic coast. Life-threatening rip currents and high surf continue to impact much of the East Coast through the end of the week. Hazardous, record heat will continue across the Western U.S. through the weekend. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Light Rain Fog/Mist

67°F

19°C

Humidity 100%
Wind Speed Vrbl 3 mph
Barometer 29.96 in (1015.5 mb)
Dewpoint 67°F (19°C)
Visibility 4.00 mi
Last update 21 Aug 3:56 pm EDT
Extended Forecast for

4 Miles ESE Poolesville MD

  • Tonight

    Tonight: Partly cloudy, with a low around 62. North wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 22 mph.

    Low: 62 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 82. North wind 3 to 5 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 60. Light and variable wind.

    Low: 60 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 83. Light south wind increasing to 5 to 10 mph in the morning.

    High: 83 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 67. South wind 6 to 9 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 50%.

    High: 84 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 2am. 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 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 62. North wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 22 mph.
Friday
Sunny, with a high near 82. North wind 3 to 5 mph.
Friday Night
Clear, with a low around 60. Light and variable wind.
Saturday
Sunny, with a high near 83. Light south wind increasing to 5 to 10 mph in the morning.
Saturday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 67. South wind 6 to 9 mph. Chance of precipitation is 20%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 50%.
Sunday Night
A chance of showers before 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Poolesville MD
 39.12°N 77.36°W (Elev. 348 ft)
Last Update:
4:29 pm EDT Aug 21, 2025
Forecast Valid:
4pm EDT Aug 21, 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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation