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August 14, 2026: 90 mph microburst confirmed in Charlottesville

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Mostly Cloudy

66°F

19°C

Humidity	100%
Wind Speed	Calm
Barometer	30.07 in (1019.4 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Last update	21 Aug 11:56 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Rockville MD

Overnight
Low: 65 °F
Chance
Showers
Saturday
High: 77 °F
Showers
Likely
Saturday Night
Low: 66 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 82 °F
Mostly Sunny
Sunday Night
Low: 62 °F
Mostly Clear
Monday
High: 80 °F
Sunny
Monday Night
Low: 60 °F
Mostly Clear
Tuesday
High: 81 °F
Sunny
Tuesday Night
Low: 64 °F
Mostly Clear

Detailed Forecast

Overnight

A chance of showers after 4am. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%.

Saturday

A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Cloudy, with a high near 77. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Saturday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Light and variable wind. Chance of precipitation is 40%.

Sunday

Mostly sunny, with a high near 82. West wind 5 to 9 mph, with gusts as high as 18 mph.

Sunday Night

Mostly clear, with a low around 62. Northwest wind 3 to 6 mph.

Monday

Sunny, with a high near 80.

Monday Night

Mostly clear, with a low around 60.

Tuesday

Sunny, with a high near 81.