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

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. South wind around 9 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A slight chance of snow before 8am, then a chance of rain. Cloudy, with a high near 45. South wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 45 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30. West wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 30 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 37. West wind around 14 mph, with gusts as high as 25 mph.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 24. West wind 6 to 8 mph.

    Low: 24 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow, mainly after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 30%.

    High: 37 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.

    Low: 28 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 28. South wind around 9 mph, with gusts as high as 20 mph.
Wednesday
A slight chance of snow before 8am, then a chance of rain. Cloudy, with a high near 45. South wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday Night
Mostly cloudy, with a low around 30. West wind 10 to 13 mph, with gusts as high as 22 mph.
Thursday
Mostly sunny, with a high near 37. West wind around 14 mph, with gusts as high as 25 mph.
Thursday Night
Partly cloudy, with a low around 24. West wind 6 to 8 mph.
Friday
A chance of snow, mainly after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 30%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 42.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Sunday
A chance of snow before 1pm. Mostly sunny, with a high near 36. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 16.
Monday
Mostly sunny, with a high near 32.
Monday Night
Mostly cloudy, with a low around 21.
Tuesday
Mostly sunny, with a high near 35.
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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:
5:48 pm EST Dec 9, 2025
Forecast Valid:
6pm EST Dec 9, 2025-6pm EST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

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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