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

67°F

19°C

Humidity 87%
Wind Speed Calm
Barometer 30.14 in (1021.8 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 25 Jul 2:56 am EDT
Extended Forecast for

North Potomac MD

  • Overnight

    Overnight: Mostly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 82. Light southeast wind.

    High: 82 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 64. Light east wind.

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 86. Light and variable wind.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 40%.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.

    Low: 70 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.

    High: 86 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 65. Calm wind.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 82. Light southeast wind.
Saturday Night
Partly cloudy, with a low around 64. Light east wind.
Sunday
Mostly sunny, with a high near 86. Light and variable wind.
Sunday Night
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 67. Light and variable wind. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
A slight chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
Thursday Night
Mostly clear, with a low around 66.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
North Potomac MD
 39.09°N 77.28°W (Elev. 351 ft)
Last Update:
2:23 am EDT Jul 25, 2026
Forecast Valid:
3am EDT Jul 25, 2026-6pm EDT Jul 31, 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