Areas of Extreme Heat and Excessive Rainfall Potential

Dangerous and extreme heat will remain across portions of the central U.S. this week, persisting across the mid to lower Mississippi Valley, Gulf Coast, southern Plains and portions of Texas. A heat wave over the Southwest U.S. will peak this weekend. Heavy to excessive rainfall may produce flash flooding from the Delmarva Peninsula north into the Hudson Valley today and tonight. Read More >

Hazardous Weather Conditions

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Thunderstorm Heavy Rain

70°F

21°C

Humidity	NA
Wind Speed	Vrbl 6 mph
Barometer	29.64 in (1004.7 mb)
Dewpoint	N/A
Visibility	10.00 mi
Last update	28 Jul 5:56 pm EDT

More Information:

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

Extended Forecast for

Laytonsville MD

Tornado Watch until July 28, 10:00pm

Click here for hazard details and duration

...

Tornado Watch until July 28, 10:00pm
NOW until 10:00pm Tue
Tornado Watch
Tonight
Low: 64 °F
Severe
Thunderstorms
then Mostly
Clear
Wednesday
High: 81 °F
Mostly Sunny
Wednesday Night
Low: 64 °F
Mostly Clear
Thursday
High: 81 °F
Mostly Sunny
Thursday Night
Low: 63 °F
Partly Cloudy
Friday
High: 84 °F
Sunny
Friday Night
Low: 66 °F
Partly Cloudy
Saturday
High: 86 °F
Partly Sunny

Detailed Forecast

Tonight

Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 11pm. Some of the storms could be severe. Low around 64. Southwest wind 5 to 7 mph becoming calm. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Wednesday

Mostly sunny, with a high near 81. Northwest wind 10 to 13 mph, with gusts as high as 24 mph.

Wednesday Night

Mostly clear, with a low around 64. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

Thursday

Mostly sunny, with a high near 81. Northwest wind around 11 mph, with gusts as high as 22 mph.

Thursday Night

Partly cloudy, with a low around 63. Northwest wind 3 to 6 mph.

Friday

Sunny, with a high near 84.

Friday Night

Partly cloudy, with a low around 66.

Saturday

Partly sunny, with a high near 86.

Saturday Night

A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 68. 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 84. Chance of precipitation is 40%.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.

Monday

A chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Chance of precipitation is 50%.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.

Tuesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 20%.