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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Rossmoor MD

  • Today

    Today: Mostly sunny, with a high near 36. West wind 13 to 16 mph, with gusts as high as 31 mph.

    High: 36 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 25. West wind 5 to 8 mph.

    Low: 25 °F

    Increasing
    Clouds

  • Friday

    Friday: A slight chance of snow after 1pm. Partly sunny, with a high near 37. West wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 37 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Friday Night

    Friday Night: A chance of snow, mainly before 1am. Mostly cloudy, with a low around 26. Calm wind. Chance of precipitation is 30%.

    Low: 26 °F

    Chance Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 41. Calm wind becoming west 5 to 8 mph in the morning.

    High: 41 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Snow, possibly mixed with rain, becoming all snow after 4am. Low around 23. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 23 °F

    Chance
    Rain/Snow
    then
    Rain/Snow

  • Sunday

    Sunday: A chance of snow before 1pm. Partly sunny, with a high near 30. Chance of precipitation is 40%.

    High: 30 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 36. West wind 13 to 16 mph, with gusts as high as 31 mph.
Tonight
Increasing clouds, with a low around 25. West wind 5 to 8 mph.
Friday
A slight chance of snow after 1pm. Partly sunny, with a high near 37. West wind 3 to 6 mph. Chance of precipitation is 20%.
Friday Night
A chance of snow, mainly before 1am. Mostly cloudy, with a low around 26. Calm wind. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 41. Calm wind becoming west 5 to 8 mph in the morning.
Saturday Night
Snow, possibly mixed with rain, becoming all snow after 4am. Low around 23. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Sunday
A chance of snow before 1pm. Partly sunny, with a high near 30. Chance of precipitation is 40%.
Sunday Night
Mostly clear, with a low around 17.
Monday
Mostly sunny, with a high near 30.
Monday Night
Partly cloudy, with a low around 19.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Partly sunny, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rossmoor MD
 39.09°N 77.08°W (Elev. 440 ft)
Last Update:
5:55 am EST Dec 11, 2025
Forecast Valid:
6am EST Dec 11, 2025-6pm EST Dec 17, 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