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.

Mostly Cloudy

27°F

-3°C

Humidity 46%
Wind Speed SW 10 mph
Barometer 30.00 in (1018.1 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 16 Jan 10:56 am EST
Extended Forecast for

Derwood MD

  • Today

    Today: Mostly sunny, with a high near 35. South wind 8 to 10 mph.

    High: 35 °F

    Mostly Sunny

  • Tonight

    Tonight: Scattered snow showers before 3am, then scattered snow showers after 4am. Increasing clouds, with a low around 30. South wind around 8 mph. Chance of precipitation is 30%.

    Low: 30 °F

    Partly Cloudy
    then
    Scattered
    Snow Showers

  • Saturday

    Saturday: Rain and snow showers likely, mainly before 11am. Mostly cloudy, with a high near 46. South wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 46 °F

    Rain/Snow
    Likely then
    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after 1am. Mostly cloudy, with a low around 30. Light northwest wind. Chance of precipitation is 30%.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: A chance of snow, mainly before 1pm. Mostly cloudy, with a high near 34. Northwest wind 5 to 8 mph. Chance of precipitation is 30%.

    High: 34 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 36.

    High: 36 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 11.

    Low: 11 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 24.

    High: 24 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 35. South wind 8 to 10 mph.
Tonight
Scattered snow showers before 3am, then scattered snow showers after 4am. Increasing clouds, with a low around 30. South wind around 8 mph. Chance of precipitation is 30%.
Saturday
Rain and snow showers likely, mainly before 11am. Mostly cloudy, with a high near 46. South wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 30. Light northwest wind. Chance of precipitation is 30%.
Sunday
A chance of snow, mainly before 1pm. Mostly cloudy, with a high near 34. Northwest wind 5 to 8 mph. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 19.
M.L.King Day
Sunny, with a high near 36.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Sunny, with a high near 24.
Tuesday Night
Mostly clear, with a low around 13.
Wednesday
Mostly sunny, with a high near 37.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
Partly sunny, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Derwood MD
 39.12°N 77.13°W (Elev. 348 ft)
Last Update:
11:18 am EST Jan 16, 2026
Forecast Valid:
11am EST Jan 16, 2026-6pm EST Jan 22, 2026
 
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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