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

Glenwood MD

  • Today

    Today: Sunny early, then becoming partly sunny, with a high near 33. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 33 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of sleet before 10am, then a chance of rain. Mostly cloudy, with a high near 43. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    High: 43 °F

    Chance
    Rain/Sleet
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 30. West wind around 10 mph, with gusts as high as 22 mph.

    Low: 30 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 37. West wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of snow before 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

    Low: 26 °F

    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

Detailed Forecast

Today
Sunny early, then becoming partly sunny, with a high near 33. Calm wind becoming south 5 to 9 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 27. Southwest wind 7 to 9 mph, with gusts as high as 20 mph.
Wednesday
A chance of sleet before 10am, then a chance of rain. Mostly cloudy, with a high near 43. South wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 30. West wind around 10 mph, with gusts as high as 22 mph.
Thursday
Mostly sunny, with a high near 37. West wind 10 to 14 mph, with gusts as high as 23 mph.
Thursday Night
Mostly cloudy, with a low around 24.
Friday
Partly sunny, with a high near 37.
Friday Night
A chance of snow before 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 40.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 32.
Sunday Night
Mostly clear, with a low around 14.
Monday
Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Glenwood MD
 39.27°N 77.02°W (Elev. 548 ft)
Last Update:
9:53 am EST Dec 9, 2025
Forecast Valid:
9am EST Dec 9, 2025-6pm EST Dec 15, 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