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

30°F

-1°C

Humidity 75%
Wind Speed Calm
Barometer 30.13 in (1022.4 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 12 Mar 11:56 pm EDT
Extended Forecast for

3 Miles SW North Potomac MD

  • Overnight

    Overnight: Mostly clear, with a low around 29. Light southwest wind.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 54. Breezy, with a south wind 6 to 11 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 54 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 39. Southwest wind 9 to 15 mph, with gusts as high as 30 mph.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 55. West wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 55 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 40. Calm wind becoming east around 5 mph after midnight.

    Low: 40 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 60.

    High: 60 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Showers. Low around 53. Chance of precipitation is 90%.

    Low: 53 °F

    Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. High near 69. Breezy. Chance of precipitation is 90%.

    High: 69 °F

    Showers and
    Breezy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 29. Chance of precipitation is 80%.

    Low: 29 °F

    Showers then
    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 29. Light southwest wind.
Friday
Increasing clouds, with a high near 54. Breezy, with a south wind 6 to 11 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 37 mph.
Friday Night
Mostly clear, with a low around 39. Southwest wind 9 to 15 mph, with gusts as high as 30 mph.
Saturday
Mostly sunny, with a high near 55. West wind 8 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly cloudy, with a low around 40. Calm wind becoming east around 5 mph after midnight.
Sunday
Mostly cloudy, with a high near 60.
Sunday Night
Showers. Low around 53. Chance of precipitation is 90%.
Monday
Showers, with thunderstorms also possible after 2pm. High near 69. Breezy. Chance of precipitation is 90%.
Monday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 29. Chance of precipitation is 80%.
Tuesday
Mostly sunny, with a high near 39.
Tuesday Night
Mostly clear, with a low around 23.
Wednesday
Sunny, with a high near 42.
Wednesday Night
Partly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW North Potomac MD
 39.07°N 77.28°W (Elev. 299 ft)
Last Update:
10:53 pm EDT Mar 12, 2026
Forecast Valid:
12am EDT Mar 13, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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