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

70°F

21°C

Humidity 31%
Wind Speed SW 16 G 22 mph
Barometer 29.84 in (1011.8 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 20 Mar 3:56 pm EDT
Extended Forecast for

Germantown MD

  • This Afternoon

    This Afternoon: Isolated showers after 5pm. Cloudy, with a high near 70. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 70 °F

    Isolated
    Showers

  • Tonight

    Tonight: Showers and thunderstorms before 2am, then isolated showers between 2am and 3am. Low around 48. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 63. North wind 5 to 7 mph.

    High: 63 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 47. Calm wind becoming southeast around 5 mph after midnight.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 77. Southwest wind 6 to 9 mph.

    High: 77 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

  • Monday

    Monday: Showers likely before 8am. Partly sunny, with a high near 58. Chance of precipitation is 60%.

    High: 58 °F

    Showers
    Likely then
    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

This Afternoon
Isolated showers after 5pm. Cloudy, with a high near 70. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms before 2am, then isolated showers between 2am and 3am. Low around 48. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 63. North wind 5 to 7 mph.
Saturday Night
Partly cloudy, with a low around 47. Calm wind becoming southeast around 5 mph after midnight.
Sunday
Partly sunny, with a high near 77. Southwest wind 6 to 9 mph.
Sunday Night
A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Monday
Showers likely before 8am. Partly sunny, with a high near 58. Chance of precipitation is 60%.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly cloudy, with a high near 53.
Wednesday Night
Partly cloudy, with a low around 36.
Thursday
Partly sunny, with a high near 61.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 44. Chance of precipitation is 40%.
Friday
A chance of rain. Partly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Germantown MD
 39.18°N 77.26°W (Elev. 489 ft)
Last Update:
2:23 pm EDT Mar 20, 2026
Forecast Valid:
4pm EDT Mar 20, 2026-6pm EDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation