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

Washington/Reagan National Airport, DC (KDCA)

Lat: 38.85°NLon: 77.03°WElev: 13ft.

Thunderstorm Light Rain Fog/Mist

70°F

21°C

Humidity	93%
Wind Speed	NE 10 G 21 mph
Barometer	29.58 in (1001.4 mb)
Dewpoint	68°F (20°C)
Visibility	5.00 mi
Last update	28 Jul 6:52 pm EDT

More Information:

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

Extended Forecast for

McLean VA

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: 67 °F
Severe
Thunderstorms
then Mostly
Clear
Wednesday
High: 84 °F
Sunny
Wednesday Night
Low: 67 °F
Mostly Clear
Thursday
High: 84 °F
Sunny
Thursday Night
Low: 66 °F
Partly Cloudy
Friday
High: 87 °F
Sunny
Friday Night
Low: 70 °F
Partly Cloudy
Saturday
High: 89 °F
Partly Sunny

Detailed Forecast

Tonight

Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Some of the storms could be severe. Low around 67. Light and variable wind becoming northwest 5 to 9 mph after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday

Sunny, with a high near 84. Northwest wind 10 to 13 mph, with gusts as high as 23 mph.

Wednesday Night

Mostly clear, with a low around 67. Northwest wind 9 to 11 mph, with gusts as high as 18 mph.

Thursday

Sunny, with a high near 84. Northwest wind around 11 mph, with gusts as high as 22 mph.

Thursday Night

Partly cloudy, with a low around 66. Northwest wind 5 to 7 mph.

Friday

Sunny, with a high near 87.

Friday Night

Partly cloudy, with a low around 70.

Saturday

Partly sunny, with a high near 89.

Saturday Night

A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. 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 87. Chance of precipitation is 40%.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.

Monday

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 87. Chance of precipitation is 60%.

Monday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

Tuesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 20%.