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

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

33°F

1°C

Humidity 75%
Wind Speed Calm
Barometer 30.10 in (1021.3 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 3 Dec 5:56 pm EST
Extended Forecast for

Rossmoor MD

  • Tonight

    Tonight: Partly cloudy, with a low around 26. Light and variable wind.

    Low: 26 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 40. Northwest wind 6 to 14 mph, with gusts as high as 26 mph.

    High: 40 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 20. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.

    Low: 20 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow. Cloudy, with a high near 33. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 50%.

    High: 33 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow before 10pm, then a chance of snow and freezing rain between 10pm and 1am, then a slight chance of freezing rain after 1am. Mostly cloudy, with a low around 23. Calm wind. Chance of precipitation is 30%.

    Low: 23 °F

    Chance Wintry
    Mix

  • Saturday

    Saturday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 26. Light and variable wind.
Thursday
Partly sunny, with a high near 40. Northwest wind 6 to 14 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 20. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Friday
A chance of snow. Cloudy, with a high near 33. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 50%.
Friday Night
A chance of snow before 10pm, then a chance of snow and freezing rain between 10pm and 1am, then a slight chance of freezing rain after 1am. Mostly cloudy, with a low around 23. Calm wind. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
Partly sunny, with a high near 35.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Partly sunny, with a high near 37.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
Rossmoor MD
 39.09°N 77.08°W (Elev. 440 ft)
Last Update:
3:53 pm EST Dec 3, 2025
Forecast Valid:
6pm EST Dec 3, 2025-6pm EST Dec 10, 2025
 
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Additional Resources

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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