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.

Overcast

36°F

2°C

Humidity 52%
Wind Speed W 9 mph
Barometer 30.06 in (1019.7 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 27 Nov 5:56 pm EST
Extended Forecast for

Rossmoor MD

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 28. West wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 28 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 40. West wind 15 to 18 mph, with gusts as high as 34 mph.

    High: 40 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25. West wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 41. West wind around 6 mph becoming calm in the afternoon.

    High: 41 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30. Calm wind becoming south around 5 mph after midnight.

    Low: 30 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and snow before 1pm, then rain likely. Cloudy, with a high near 43. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of snow after 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 28. West wind 9 to 14 mph, with gusts as high as 23 mph.
Friday
Sunny, with a high near 40. West wind 15 to 18 mph, with gusts as high as 34 mph.
Friday Night
Mostly clear, with a low around 25. West wind 7 to 10 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 41. West wind around 6 mph becoming calm in the afternoon.
Saturday Night
Mostly cloudy, with a low around 30. Calm wind becoming south around 5 mph after midnight.
Sunday
A chance of rain and snow before 1pm, then rain likely. Cloudy, with a high near 43. Chance of precipitation is 60%. Little or no snow accumulation expected.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
Mostly sunny, with a high near 41.
Monday Night
A chance of snow after 1am. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Tuesday
Rain likely. Cloudy, with a high near 38. Chance of precipitation is 60%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 39.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
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:
3:53 pm EST Nov 27, 2025
Forecast Valid:
6pm EST Nov 27, 2025-6pm EST Dec 4, 2025
 
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Additional Resources

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Chance of Precipitation