Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

A Few Clouds

70°F

21°C

Humidity	NA
Wind Speed	Calm
Barometer	29.64 in (1004.6 mb)
Dewpoint	N/A
Visibility	10.00 mi
Last update	28 Jul 9:56 pm EDT

More Information:

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

Extended Forecast for

2 Miles NNW Potomac MD

Tonight
Low: 66 °F
Severe
Thunderstorms
then Mostly
Clear
Wednesday
High: 83 °F
Mostly Sunny
Wednesday Night
Low: 66 °F
Mostly Clear
Thursday
High: 83 °F
Sunny
Thursday Night
Low: 65 °F
Partly Cloudy
Friday
High: 86 °F
Sunny
Friday Night
Low: 69 °F
Partly Cloudy
Saturday
High: 88 °F
Partly Sunny
Saturday Night
Low: 70 °F
Slight Chance
T-storms

Detailed Forecast

Tonight

A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Some of the storms could be severe. Mostly clear, with a low around 66. Northwest wind 3 to 8 mph. Chance of precipitation is 50%.

Wednesday

Mostly sunny, with a high near 83. Northwest wind 10 to 13 mph, with gusts as high as 23 mph.

Wednesday Night

Mostly clear, with a low around 66. Northwest wind 8 to 10 mph, with gusts as high as 18 mph.

Thursday

Sunny, with a high near 83. Northwest wind around 11 mph, with gusts as high as 22 mph.

Thursday Night

Partly cloudy, with a low around 65. Northwest wind 3 to 7 mph.

Friday

Sunny, with a high near 86.

Friday Night

Partly cloudy, with a low around 69.

Saturday

Partly sunny, with a high near 88.

Saturday Night

A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 20%.

Sunday

A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 40%.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.

Monday

A chance of showers and thunderstorms. Mostly cloudy, with a high near 85. Chance of precipitation is 50%.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.

Tuesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 20%.