Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

84°F

29°C

Humidity	61%
Wind Speed	SW 12 mph
Barometer	30.14 in (1020.1 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	30 Jun 11:52 am EDT

More Information:

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

Extended Forecast for

3 Miles NNW Mc Lean VA

Extreme Heat Watch July 2, 11:00am until July 3, 08:00pm

Heat Advisory July 1, 11:00am until July 1, 08:00pm

Click here for hazard details and duration

Extreme Heat Watch

Heat Advisory

This Afternoon
High: 89 °F
Mostly Sunny
Tonight
Low: 71 °F
Mostly Clear
Wednesday
High: 96 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 76 °F
Mostly Clear
Thursday
High: 101 °F
Hot
Thursday Night
Low: 79 °F
Mostly Clear
Friday
High: 101 °F
Sunny then
Chance
T-storms
Friday Night
Low: 77 °F
Chance
T-storms
Independence Day
High: 100 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

This Afternoon

Mostly sunny, with a high near 89. South wind 6 to 9 mph.

Tonight

Mostly clear, with a low around 71. South wind 3 to 8 mph. Winds could gust as high as 18 mph.

Wednesday

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Heat index values as high as 104. Southwest wind 3 to 6 mph. Chance of precipitation is 20%.

Wednesday Night

Mostly clear, with a low around 76. South wind 5 to 7 mph.

Thursday

Sunny and hot, with a high near 101. Light southwest wind.

Thursday Night

Mostly clear, with a low around 79.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 101. Chance of precipitation is 30%.

Friday Night

A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 77. Chance of precipitation is 30%.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 100. Chance of precipitation is 30%.