Severe Weather in the Northeast; Intense Heat in the Mid-Atlantic and Portions of the West

Severe thunderstorms and heavy rainfall are likely across portions of the Northeast. An intense heat wave will continue across the Mid-Atlantic, where record high temperatures are likely. In the West, triple-digit high temperatures are possible in central and southern California, Arizona, and Utah. Monsoon-like conditions may produce isolated flash flooding in the Four Corners region. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from June 23, 11:00 AM EDT until June 23, 07:00 PM EDT

Current conditions at

Gaithersburg - Montgomery County Airport (KGAI)

Lat: 39.17°NLon: 77.17°WElev: 495ft.

Overcast

86°F

30°C

Humidity	53%
Wind Speed	S 5 mph
Barometer	29.94 in (1014.4 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Heat Index	89°F (32°C)
Last update	22 Jun 10:56 pm EDT

More Information:

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

Extended Forecast for

2 Miles WSW Damascus MD

Heat Advisory June 23, 11:00am until June 23, 07:00pm

Click here for hazard details and duration

Heat Advisory

Tonight
Low: 78 °F
Partly Cloudy
Sunday
High: 97 °F
Scattered
T-storms
Sunday Night
Low: 71 °F
Scattered
T-storms
Monday
High: 87 °F
Slight Chance
Showers then
Slight Chance
T-storms
Monday Night
Low: 64 °F
Mostly Clear
Tuesday
High: 89 °F
Sunny
Tuesday Night
Low: 70 °F
Partly Cloudy
Wednesday
High: 96 °F
Mostly Sunny
then Chance
T-storms
Wednesday Night
Low: 72 °F
Chance
T-storms

Detailed Forecast

Tonight

Partly cloudy, with a low around 78. South wind 5 to 7 mph.

Sunday

Scattered showers and thunderstorms, mainly after 2pm. Partly sunny and hot, with a high near 97. Heat index values as high as 106. Southwest wind 9 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.

Sunday Night

Scattered showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 71. Southwest wind around 9 mph. Chance of precipitation is 50%.

Monday

A slight chance of showers, with thunderstorms also possible after 2pm. Sunny, with a high near 87. Northwest wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

Monday Night

Mostly clear, with a low around 64. North wind 5 to 10 mph.

Tuesday

Sunny, with a high near 89.

Tuesday Night

Partly cloudy, with a low around 70.

Wednesday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 30%.

Wednesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 50%.

Thursday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 30%.