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.

Overcast

37°F

3°C

Humidity 86%
Wind Speed Vrbl 3 mph
Barometer 29.87 in (1013.4 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 27 Dec 4:56 am EST
Extended Forecast for

Gaithersburg MD

  • Today

    Today: Partly sunny, with a high near 42. North wind 6 to 10 mph.

    High: 42 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 28. Northeast wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of rain after 1pm. Cloudy, with a high near 45. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 30%.

    High: 45 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday Night

    Sunday Night: A chance of rain, mainly after 1am. Cloudy, with a low around 42. South wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 42 °F

    Chance Rain

  • Monday

    Monday: A chance of rain. Partly sunny, with a high near 61. Breezy, with a south wind 14 to 20 mph becoming west in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 50%.

    High: 61 °F

    Chance Rain
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. Breezy.

    High: 35 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 40.

    High: 40 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 42. North wind 6 to 10 mph.
Tonight
Partly cloudy, with a low around 28. Northeast wind around 5 mph becoming calm in the evening.
Sunday
A chance of rain after 1pm. Cloudy, with a high near 45. Calm wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 30%.
Sunday Night
A chance of rain, mainly after 1am. Cloudy, with a low around 42. South wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Monday
A chance of rain. Partly sunny, with a high near 61. Breezy, with a south wind 14 to 20 mph becoming west in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 50%.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Mostly sunny, with a high near 35. Breezy.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 26.
New Year's Day
Mostly cloudy, with a high near 39.
Thursday Night
Partly cloudy, with a low around 18.
Friday
Sunny, with a high near 31.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gaithersburg MD
 39.13°N 77.21°W (Elev. 404 ft)
Last Update:
3:53 am EST Dec 27, 2025
Forecast Valid:
5am EST Dec 27, 2025-6pm EST Jan 2, 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