Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

70°F

21°C

Humidity	79%
Wind Speed	NE 6 mph
Barometer	30.05 in (1017.0 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Last update	4 Aug 5:52 am EDT

More Information:

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

Extended Forecast for

Tysons Corner VA

Today
High: 86 °F
Partly Sunny
Tonight
Low: 71 °F
Slight Chance
T-storms then
Showers
Likely
Wednesday
High: 86 °F
Showers
Likely
Wednesday Night
Low: 73 °F
Showers
Likely then
Slight Chance
Showers
Thursday
High: 91 °F
Mostly Sunny
then Slight
Chance
T-storms
Thursday Night
Low: 74 °F
Slight Chance
T-storms then
Slight Chance
Showers
Friday
High: 91 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 72 °F
Chance
T-storms
Saturday
High: 89 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

Today

Partly sunny, with a high near 86. East wind 5 to 7 mph.

Tonight

A chance of showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then showers likely after 5am. Mostly cloudy, with a low around 71. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

Showers and thunderstorms likely, mainly before 3pm, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 86. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 73. South wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. South wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

Thursday Night

A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 74. Chance of precipitation is 20%.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 40%.

Friday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 50%.

Saturday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 50%.

Saturday Night

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

Sunday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 20%.

Sunday Night

Partly cloudy, with a low around 73.