Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Fair

77°F

25°C

Humidity	36%
Wind Speed	Vrbl 3 mph
Barometer	29.83 in (1011.2 mb)
Dewpoint	48°F (9°C)
Visibility	10.00 mi
Heat Index	78°F (26°C)
Last update	16 Jun 6:56 pm EDT

More Information:

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

Extended Forecast for

4 Miles W North Potomac MD

Tonight
Low: 62 °F
Mostly Cloudy
Wednesday
High: 86 °F
Mostly Sunny
Wednesday Night
Low: 67 °F
Increasing
Clouds
Thursday
High: 92 °F
Chance
Showers then
Chance
T-storms
Thursday Night
Low: 67 °F
Slight Chance
T-storms then
Chance
Showers
Juneteenth
High: 82 °F
Chance
Showers
Friday Night
Low: 61 °F
Mostly Clear
Saturday
High: 82 °F
Sunny
Saturday Night
Low: 61 °F
Mostly Clear

Detailed Forecast

Tonight

Mostly cloudy, with a low around 62. South wind 3 to 5 mph.

Wednesday

Mostly sunny, with a high near 86. Calm wind becoming west 5 to 8 mph in the afternoon.

Wednesday Night

Increasing clouds, with a low around 67. Calm wind becoming south 5 to 8 mph after midnight. Winds could gust as high as 18 mph.

Thursday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 92. West wind around 15 mph, with gusts as high as 29 mph. Chance of precipitation is 50%.

Thursday Night

A slight chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 67. West wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

Juneteenth

A chance of showers and thunderstorms before 11am, then a chance of showers between 11am and 2pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.

Friday Night

Mostly clear, with a low around 61.

Saturday

Sunny, with a high near 82.

Saturday Night

Mostly clear, with a low around 61.

Sunday

Sunny, with a high near 84.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.

Monday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. Chance of precipitation is 60%.