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.

Light Rain

36°F

2°C

Humidity 62%
Wind Speed S 10 mph
Barometer 30.30 in (1027.9 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 30 Nov 6:56 am EST
Extended Forecast for

Rossmoor MD

  • Today

    Today: Rain, snow, and sleet likely before 10am, then a chance of rain between 10am and 3pm. Cloudy, with a high near 43. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. Little or no snow and sleet accumulation expected.

    High: 43 °F

    Wintry Mix
    Likely then
    Chance Rain

  • Tonight

    Tonight: Partly cloudy, with a low around 29. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 43. Northwest wind 5 to 10 mph becoming light north in the afternoon. Winds could gust as high as 18 mph.

    High: 43 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Snow likely after 1am, mixing with rain after 4am. Increasing clouds, with a low around 29. Light and variable wind. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 29 °F

    Mostly Cloudy
    then
    Rain/Snow
    Likely

  • Tuesday

    Tuesday: Rain, possibly mixed with snow, becoming all rain after 1pm. High near 40. Light and variable wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Rain/Snow

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 38.

    High: 38 °F

    Sunny

  • Wednesday Night

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

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 44.

    High: 44 °F

    Partly Sunny

Detailed Forecast

Today
Rain, snow, and sleet likely before 10am, then a chance of rain between 10am and 3pm. Cloudy, with a high near 43. South wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. Little or no snow and sleet accumulation expected.
Tonight
Partly cloudy, with a low around 29. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 43. Northwest wind 5 to 10 mph becoming light north in the afternoon. Winds could gust as high as 18 mph.
Monday Night
Snow likely after 1am, mixing with rain after 4am. Increasing clouds, with a low around 29. Light and variable wind. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Tuesday
Rain, possibly mixed with snow, becoming all rain after 1pm. High near 40. Light and variable wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Sunny, with a high near 38.
Wednesday Night
Partly cloudy, with a low around 27.
Thursday
Partly sunny, with a high near 44.
Thursday Night
Partly cloudy, with a low around 19.
Friday
Mostly cloudy, with a high near 33.
Friday Night
Snow likely. Cloudy, with a low around 26. Chance of precipitation is 60%.
Saturday
A chance of rain. Mostly cloudy, with a high near 38. Chance of precipitation is 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:
7:33 am EST Nov 30, 2025
Forecast Valid:
7am EST Nov 30, 2025-6pm EST Dec 6, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation