National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northern Gulf Coast from the western Florida Panhandle to southeastern Louisiana through tonight. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Mostly Cloudy

64°F

18°C

Humidity 78%
Wind Speed Calm
Barometer 30.05 in (1018.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 23 Jul 2:56 am EDT
Extended Forecast for

Rockville MD

  • Overnight

    Overnight: Mostly cloudy, with a low around 63. North wind around 7 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80. North wind 5 to 7 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 61. Calm wind.

    Low: 61 °F

    Clear

  • Friday

    Friday: Increasing clouds, with a high near 81. Calm wind becoming east 5 to 7 mph in the afternoon.

    High: 81 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 67. Chance of precipitation is 20%.

    Low: 67 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 63. North wind around 7 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 80. North wind 5 to 7 mph.
Thursday Night
Clear, with a low around 61. Calm wind.
Friday
Increasing clouds, with a high near 81. Calm wind becoming east 5 to 7 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 67. Chance of precipitation is 20%.
Monday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 20%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rockville MD
 39.1°N 77.13°W (Elev. 400 ft)
Last Update:
2:23 am EDT Jul 23, 2026
Forecast Valid:
3am EDT Jul 23, 2026-6pm EDT Jul 29, 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