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

45°F

7°C

Humidity 61%
Wind Speed SE 5 mph
Barometer 30.17 in (1023.3 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 19 Mar 10:56 pm EDT
Extended Forecast for

Gaithersburg MD

  • Tonight

    Tonight: Mostly clear, with a low around 38. Calm wind.

    Low: 38 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 67. Light southeast wind becoming south 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.

    High: 67 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 2am. Cloudy during the early evening, then gradual clearing, with a low around 47. Southwest wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 66. Northwest wind 5 to 7 mph.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45. Light east wind.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of rain after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.

    Low: 50 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: A chance of rain before 8am. Mostly sunny, with a high near 60. Breezy. Chance of precipitation is 30%.

    High: 60 °F

    Chance Rain
    then Mostly
    Sunny and
    Breezy

  • Monday Night

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

    Low: 30 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Calm wind.
Friday
Increasing clouds, with a high near 67. Light southeast wind becoming south 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.
Friday Night
Showers likely and possibly a thunderstorm before 2am. Cloudy during the early evening, then gradual clearing, with a low around 47. Southwest wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 66. Northwest wind 5 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 45. Light east wind.
Sunday
Partly sunny, with a high near 73.
Sunday Night
A chance of rain after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.
Monday
A chance of rain before 8am. Mostly sunny, with a high near 60. Breezy. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly cloudy, with a high near 53.
Wednesday Night
Mostly cloudy, with a low around 38.
Thursday
Partly sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Gaithersburg MD
 39.15°N 77.21°W (Elev. 443 ft)
Last Update:
10:52 pm EDT Mar 19, 2026
Forecast Valid:
11pm EDT Mar 19, 2026-6pm EDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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