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.

Mostly Cloudy

78°F

26°C

Humidity 85%
Wind Speed NW 3 mph
Barometer 30.07 in (1019.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 14 Aug 2:56 pm EDT
Extended Forecast for

Rockville MD

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Cloudy, with a high near 84. Light northwest wind. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87. Northeast wind 3 to 5 mph.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 70. Light east wind.

    Low: 70 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 85. South wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

    High: 85 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

    Low: 72 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%.

    High: 88 °F

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Cloudy, with a high near 84. Light northwest wind. Chance of precipitation is 30%.
Tonight
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 87. Northeast wind 3 to 5 mph.
Saturday Night
Increasing clouds, with a low around 70. Light east wind.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 85. South wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 88.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Friday
A slight chance of showers. Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rockville MD
 39.08°N 77.16°W (Elev. 430 ft)
Last Update:
2:23 pm EDT Aug 14, 2026
Forecast Valid:
3pm EDT Aug 14, 2026-6pm EDT Aug 21, 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