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 across parts of the Upper Midwest into the Great Lakes, the Northeast, and the central High Plains. 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.

Fair

91°F

33°C

Humidity	59%
Wind Speed	Calm
Barometer	30.04 in (1016.7 mb)
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	102°F (39°C)
Last update	1 Jul 11:52 am EDT

More Information:

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

Extended Forecast for

3 Miles ESE Chantilly VA

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

Heat Advisory until July 1, 08:00pm

Click here for hazard details and duration

Extreme Heat Watch

Heat Advisory

Heat Advisory until July 1, 08:00pm
NOW until 8:00pm Wed
Heat Advisory
Today
High: 98 °F
Hot
Tonight
Low: 77 °F
Clear
Thursday
High: 101 °F
Hot
Thursday Night
Low: 79 °F
Clear
Friday
High: 103 °F
Sunny then
Slight Chance
T-storms
Friday Night
Low: 79 °F
Chance
T-storms
Independence Day
High: 99 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 76 °F
Chance
T-storms then
Chance
Showers

Detailed Forecast

Today

Sunny and hot, with a high near 98. Heat index values as high as 106. South wind around 6 mph.

Tonight

Clear, with a low around 77. South wind around 7 mph.

Thursday

Sunny and hot, with a high near 101. Heat index values as high as 109. Southwest wind around 5 mph becoming calm in the morning.

Thursday Night

Clear, with a low around 79. Light west wind.

Friday

A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 103. West wind 3 to 6 mph. Chance of precipitation is 20%.

Friday Night

A chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 79. Chance of precipitation is 30%.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 99. Chance of precipitation is 40%.

Saturday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 76. Chance of precipitation is 40%.

Sunday

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 97. Chance of precipitation is 50%.

Sunday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 50%.

Monday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 92. 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 chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 40%.