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

75°F

24°C

Humidity 82%
Wind Speed SE 5 mph
Barometer 30.14 in (1021.6 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 16 Aug 1:56 am EDT
Extended Forecast for

North Potomac MD

  • Overnight

    Overnight: Scattered showers, mainly after 5am. Mostly cloudy, with a low around 71. Light southeast wind. Chance of precipitation is 30%.

    Low: 71 °F

    Scattered
    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm, mainly before 5pm, then scattered showers and thunderstorms after 5pm. High near 81. South wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 2am, then isolated showers between 2am and 3am. Some of the storms could produce heavy rainfall. Low around 71. West wind around 6 mph becoming south in the evening. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 71 °F

    Heavy Rain

  • Monday

    Monday: Mostly sunny, with a high near 88. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 88 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. Northwest wind around 6 mph.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    Showers

Detailed Forecast

Overnight
Scattered showers, mainly after 5am. Mostly cloudy, with a low around 71. Light southeast wind. Chance of precipitation is 30%.
Sunday
Showers and possibly a thunderstorm, mainly before 5pm, then scattered showers and thunderstorms after 5pm. High near 81. South wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and thunderstorms before 2am, then isolated showers between 2am and 3am. Some of the storms could produce heavy rainfall. Low around 71. West wind around 6 mph becoming south in the evening. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Monday
Mostly sunny, with a high near 88. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 68. Northwest wind around 6 mph.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 88.
Wednesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Thursday
A slight chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
North Potomac MD
 39.09°N 77.25°W (Elev. 348 ft)
Last Update:
2:22 am EDT Aug 16, 2026
Forecast Valid:
2am EDT Aug 16, 2026-6pm EDT Aug 22, 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