Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

76°F

24°C

Humidity 62%
Wind Speed Calm
Barometer 30.05 in (1018.6 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 21 Aug 5:56 pm EDT
Extended Forecast for

Germantown MD

  • Tonight

    Tonight: Showers likely after 2am.  Increasing clouds, with a low around 64. Light east wind.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 64 °F

    Mostly Cloudy
    then Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 2pm, then isolated showers and thunderstorms after 2pm.  Areas of fog before 2pm. High near 77. Calm wind becoming southeast around 6 mph in the afternoon.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers and
    Areas Fog

  • Saturday Night

    Saturday Night: Scattered showers and thunderstorms between 8pm and 11pm, then isolated showers.  Mostly cloudy, with a low around 65. Light and variable wind.  Chance of precipitation is 40%.

    Low: 65 °F

    Scattered
    Showers

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 81. West wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 81 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 60. Northwest wind 3 to 5 mph.

    Low: 60 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers likely after 2am. Increasing clouds, with a low around 64. Light east wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers and possibly a thunderstorm before 2pm, then isolated showers and thunderstorms after 2pm. Areas of fog before 2pm. High near 77. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Scattered showers and thunderstorms between 8pm and 11pm, then isolated showers. Mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 40%.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 81. West wind 5 to 9 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 60. Northwest wind 3 to 5 mph.
Monday
Sunny, with a high near 79.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
A slight chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Germantown MD
 39.2°N 77.23°W (Elev. 443 ft)
4:53 pm EDT Aug 21, 2026
6pm EDT Aug 21, 2026-6pm EDT Aug 28, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database