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.

Rain

45°F

7°C

Humidity NA
Wind Speed NE 5 mph
Barometer 30.14 in (1022.1 mb)
Dewpoint N/A
Visibility 3.00 mi
Wind Chill42°F (6°C)
Last update 10 Jan 10:56 am EST
Extended Forecast for

Rossmoor MD

  • Today

    Today: Rain. High near 47. East wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 47 °F

    Rain

  • Tonight

    Tonight: A chance of rain, mainly before 1am. Mostly cloudy, with a low around 37. Light and variable wind becoming northwest 6 to 11 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 50%.

    Low: 37 °F

    Chance Rain
    then Slight
    Chance Rain

  • Sunday

    Sunday: A slight chance of rain after 1pm. Mostly sunny, with a high near 44. Breezy, with a northwest wind 11 to 20 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.

    High: 44 °F

    Mostly Sunny
    then Slight
    Chance Rain
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. West wind 14 to 18 mph, with gusts as high as 37 mph.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 43. West wind 7 to 9 mph, with gusts as high as 18 mph.

    High: 43 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

Detailed Forecast

Today
Rain. High near 47. East wind around 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
A chance of rain, mainly before 1am. Mostly cloudy, with a low around 37. Light and variable wind becoming northwest 6 to 11 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 50%.
Sunday
A slight chance of rain after 1pm. Mostly sunny, with a high near 44. Breezy, with a northwest wind 11 to 20 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 28. West wind 14 to 18 mph, with gusts as high as 37 mph.
Monday
Sunny, with a high near 43. West wind 7 to 9 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Mostly cloudy, with a high near 50.
Wednesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Thursday
A chance of rain. Partly sunny, with a high near 37. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Mostly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rossmoor MD
 39.12°N 77.1°W (Elev. 348 ft)
Last Update:
9:54 am EST Jan 10, 2026
Forecast Valid:
11am EST Jan 10, 2026-6pm EST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation