Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Partly Cloudy

79°F

26°C

Humidity	54%
Wind Speed	Vrbl 5 mph
Barometer	30.01 in (1017.1 mb)
Dewpoint	61°F (16°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	6 Sep 1:56 pm EDT

More Information:

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

Extended Forecast for

Gaithersburg MD

This Afternoon
High: 82 °F
Mostly Sunny
Tonight
Low: 60 °F
Mostly Clear
Labor Day
High: 82 °F
Mostly Sunny
Monday Night
Low: 59 °F
Mostly Clear
Tuesday
High: 84 °F
Sunny
Tuesday Night
Low: 64 °F
Partly Cloudy
Wednesday
High: 87 °F
Mostly Sunny
Wednesday Night
Low: 70 °F
Partly Cloudy
Thursday
High: 88 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 82. Northeast wind around 7 mph.

Tonight

Mostly clear, with a low around 60. Northeast wind around 5 mph becoming calm in the evening.

Labor Day

Mostly sunny, with a high near 82. North wind 3 to 5 mph.

Monday Night

Mostly clear, with a low around 59. Calm wind.

Tuesday

Sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon.

Tuesday Night

Partly cloudy, with a low around 64.

Wednesday

Mostly sunny, with a high near 87.

Wednesday Night

Partly cloudy, with a low around 70.

Thursday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 50%.

Thursday Night

A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.

Friday

Mostly sunny, with a high near 79.

Friday Night

A slight chance of showers. Partly cloudy, with a low around 62. Chance of precipitation is 20%.

Saturday

A slight chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 20%.