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

23°F

-5°C

Humidity 92%
Wind Speed Calm
Barometer 30.13 in (1022.3 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 13 Jan 7:56 am EST
Extended Forecast for

Glenwood MD

  • Today

    Today: Mostly sunny, with a high near 48. Light southwest wind becoming south 5 to 9 mph in the morning.

    High: 48 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain after 4am. Mostly cloudy, with a low around 38. Southwest wind 6 to 10 mph. Chance of precipitation is 20%.

    Low: 38 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: A chance of rain, mainly after 7am. Cloudy, with a high near 49. Southwest wind around 6 mph. Chance of precipitation is 50%.

    High: 49 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 4am, then a chance of snow. Mostly cloudy, with a low around 23. Light and variable wind becoming northwest 13 to 18 mph in the evening. Winds could gust as high as 32 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 23 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: A chance of snow before 7am. Partly sunny, with a high near 28. Blustery, with a northwest wind 18 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.

    High: 28 °F

    Blustery.
    Chance Snow
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 48. Light southwest wind becoming south 5 to 9 mph in the morning.
Tonight
A slight chance of rain after 4am. Mostly cloudy, with a low around 38. Southwest wind 6 to 10 mph. Chance of precipitation is 20%.
Wednesday
A chance of rain, mainly after 7am. Cloudy, with a high near 49. Southwest wind around 6 mph. Chance of precipitation is 50%.
Wednesday Night
Rain likely before 4am, then a chance of snow. Mostly cloudy, with a low around 23. Light and variable wind becoming northwest 13 to 18 mph in the evening. Winds could gust as high as 32 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday
A chance of snow before 7am. Partly sunny, with a high near 28. Blustery, with a northwest wind 18 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 15.
Friday
Mostly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly sunny, with a high near 40.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Partly sunny, with a high near 32.
Sunday Night
Partly cloudy, with a low around 17.
M.L.King Day
Mostly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Glenwood MD
 39.29°N 77.01°W (Elev. 600 ft)
Last Update:
6:53 am EST Jan 13, 2026
Forecast Valid:
8am EST Jan 13, 2026-6pm EST Jan 19, 2026
 
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