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

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Mostly Cloudy

38°F

3°C

Humidity 57%
Wind Speed W 18 G 22 mph
Barometer 30.15 in (1023.0 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 4 Dec 1:56 pm EST
Extended Forecast for

Rossmoor MD

Winter Weather Advisory December 5, 04:00am until December 5, 04:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 42. Northwest wind 10 to 15 mph, with gusts as high as 28 mph.

    High: 42 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of snow, mainly after 4am. Increasing clouds, with a low around 21. Northwest wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 40%.

    Low: 21 °F

    Partly Cloudy
    then Chance
    Snow

  • Friday

    Friday: Snow likely before 11am, then a chance of snow and freezing rain. Cloudy, with a high near 32. Southeast wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    High: 32 °F

    Wintry Mix
    Likely then
    Chance Wintry
    Mix

  • Friday Night

    Friday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Patchy Fog

  • Saturday

    Saturday: Partly sunny, with a high near 41. Light southwest wind.

    High: 41 °F

    Partly Sunny

  • Saturday Night

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

    Low: 27 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Sunday Night

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

    Low: 26 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 42. Northwest wind 10 to 15 mph, with gusts as high as 28 mph.
Tonight
A chance of snow, mainly after 4am. Increasing clouds, with a low around 21. Northwest wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 40%.
Friday
Snow likely before 11am, then a chance of snow and freezing rain. Cloudy, with a high near 32. Southeast wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 70%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Friday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 25. Calm wind.
Saturday
Partly sunny, with a high near 41. Light southwest wind.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 42.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
Mostly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 37.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Mostly cloudy, with a high near 44.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rossmoor MD
 39.09°N 77.08°W (Elev. 440 ft)
Last Update:
2:04 pm EST Dec 4, 2025
Forecast Valid:
2pm EST Dec 4, 2025-6pm EST Dec 10, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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