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.

Fair

48°F

9°C

Humidity 61%
Wind Speed S 3 mph
Barometer 30.03 in (1018.2 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 26 Mar 5:56 am EDT
Extended Forecast for

4 Miles SW Glenwood MD

  • Today

    Today: Mostly sunny, with a high near 75. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain, then a chance of rain and thunderstorms after 2am. Increasing clouds, with a low around 49. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 49 °F

    Chance Rain

  • Friday

    Friday: Rain. Temperature falling to around 49 by 5pm. North wind 14 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 59 °F⇓

    Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 8pm. Mostly cloudy, with a low around 31. North wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 31 °F

    Rain Likely
    then Slight
    Chance Rain

  • Saturday

    Saturday: Sunny, with a high near 46. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 63.

    High: 63 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 75. Southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Tonight
A slight chance of rain, then a chance of rain and thunderstorms after 2am. Increasing clouds, with a low around 49. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Friday
Rain. Temperature falling to around 49 by 5pm. North wind 14 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain likely, mainly before 8pm. Mostly cloudy, with a low around 31. North wind 5 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 46. Northwest wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 30.
Sunday
Sunny, with a high near 57.
Sunday Night
Partly cloudy, with a low around 43.
Monday
Partly sunny, with a high near 63.
Monday Night
A chance of rain after 8pm. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Wednesday
A chance of rain. Partly sunny, with a high near 74. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Glenwood MD
 39.25°N 77.08°W (Elev. 459 ft)
Last Update:
4:55 am EDT Mar 26, 2026
Forecast Valid:
6am EDT Mar 26, 2026-6pm EDT Apr 1, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation