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

71°F

22°C

Humidity 76%
Wind Speed Calm
Barometer 30.14 in (1021.8 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 25 Jul 9:56 am EDT
Extended Forecast for

3 Miles WNW North Potomac MD

  • Today

    Today: Mostly sunny, with a high near 82. Light east wind.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. Light southeast 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 66. Light and variable wind. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Calm wind becoming southwest 5 to 7 mph in the afternoon. 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: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.

    High: 86 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 20%.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 82. Light east wind.
Tonight
Partly cloudy, with a low around 64. Light southeast 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 66. 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. Calm wind becoming southwest 5 to 7 mph in the afternoon. 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
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
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 85. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 66. Chance of precipitation is 20%.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW North Potomac MD
 39.12°N 77.3°W (Elev. 331 ft)
Last Update:
7:53 am EDT Jul 25, 2026
Forecast Valid:
10am EDT Jul 25, 2026-6pm EDT Jul 31, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation