Strong to Severe Thunderstorms in the East; Heat in the Central and Western U.S.

Strong to potentially severe thunderstorms with damaging wind gusts are forecast Thursday from parts of New England into the Mid Atlantic and Carolinas. Significant heat will expand across the West and Central Plains through Friday, potentially breaking daily high temperature records. Dangerous heat will then build into the Eastern U.S. this weekend through much of next week. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

A Few Clouds

85°F

29°C

Humidity	68%
Wind Speed	S 10 mph
Barometer	29.87 in (1011.2 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	92°F (33°C)
Last update	19 Jun 10:52 am EDT

More Information:

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

Extended Forecast for

Herndon VA

Juneteenth
High: 91 °F
Severe
Thunderstorms
Tonight
Low: 63 °F
Severe
Thunderstorms
then Mostly
Clear
Friday
High: 86 °F
Sunny
Friday Night
Low: 66 °F
Mostly Clear
Saturday
High: 91 °F
Sunny
Saturday Night
Low: 71 °F
Partly Cloudy
Sunday
High: 96 °F
Mostly Sunny
Sunday Night
Low: 75 °F
Mostly Clear
Monday
High: 97 °F
Hot

Detailed Forecast

Juneteenth

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe. High near 91. Southwest wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Scattered showers and thunderstorms, mainly before 8pm. Some of the storms could be severe. Mostly cloudy during the early evening, then gradual clearing, with a low around 63. Southwest wind around 11 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 30%.

Friday

Sunny, with a high near 86. West wind 7 to 9 mph.

Friday Night

Mostly clear, with a low around 66. Light southwest wind.

Saturday

Sunny, with a high near 91. Calm wind becoming southwest around 6 mph in the afternoon.

Saturday Night

Partly cloudy, with a low around 71.

Sunday

Mostly sunny, with a high near 96.

Sunday Night

Mostly clear, with a low around 75.