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.

Overcast

29°F

-2°C

Humidity 92%
Wind Speed Calm
Barometer 30.06 in (1020.1 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 5 Dec 3:56 pm EST
Extended Forecast for

Rossmoor MD

Winter Weather Advisory December 5, 07:00pm until December 6, 01:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: A slight chance of snow. Cloudy, with a high near 32. Calm wind. Chance of precipitation is 20%.

    High: 32 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: Freezing rain, mainly between 7pm and 1am. Patchy fog. Low around 27. Calm wind. Chance of precipitation is 80%. New ice accumulation of less than a 0.1 of an inch possible.

    Low: 27 °F

    Freezing Rain
    and Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 42. Light southwest wind.

    High: 42 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 42. Calm wind becoming south around 5 mph.

    High: 42 °F

    Partly Sunny

  • Sunday Night

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

    Low: 26 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A slight chance of snow. Cloudy, with a high near 32. Calm wind. Chance of precipitation is 20%.
Tonight
Freezing rain, mainly between 7pm and 1am. Patchy fog. Low around 27. Calm wind. Chance of precipitation is 80%. New ice accumulation of less than a 0.1 of an inch possible.
Saturday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 42. Light southwest wind.
Saturday Night
Partly cloudy, with a low around 25. Calm wind.
Sunday
Partly sunny, with a high near 42. Calm wind becoming south around 5 mph.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
Partly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 36.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Mostly cloudy, with a high near 45.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 44.
Thursday Night
Partly cloudy, with a low around 29.
Friday
Partly sunny, with a high near 40.
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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:
3:53 pm EST Dec 5, 2025
Forecast Valid:
4pm EST Dec 5, 2025-6pm EST Dec 12, 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