Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northern Gulf Coast from the western Florida Panhandle to southeastern Louisiana through tonight. 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.

Partly Cloudy

86°F

30°C

Humidity	45%
Wind Speed	NW 10 mph
Barometer	29.86 in (1010.7 mb)
Dewpoint	62°F (17°C)
Visibility	10.00 mi
Heat Index	87°F (31°C)
Last update	22 Jul 6:52 pm EDT

More Information:

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

Extended Forecast for

Tysons Corner VA

Tonight
Low: 64 °F
Isolated
T-storms then
Mostly Cloudy
Thursday
High: 79 °F
Becoming
Sunny
Thursday Night
Low: 62 °F
Mostly Clear
Friday
High: 80 °F
Mostly Sunny
Friday Night
Low: 64 °F
Partly Cloudy
Saturday
High: 80 °F
Mostly Sunny
Saturday Night
Low: 65 °F
Partly Cloudy
then Slight
Chance
Showers
Sunday
High: 84 °F
Mostly Sunny
then Chance
Showers
Sunday Night
Low: 67 °F
Chance
Showers

Detailed Forecast

Tonight

Isolated showers and thunderstorms before 9pm, then isolated showers between 9pm and 10pm. Mostly cloudy, with a low around 64. North wind 5 to 8 mph. Chance of precipitation is 20%.

Thursday

Partly sunny, then gradually becoming sunny, with a high near 79. North wind 6 to 8 mph.

Thursday Night

Mostly clear, with a low around 62. Calm wind.

Friday

Mostly sunny, with a high near 80. Calm wind becoming east 5 to 7 mph in the morning.

Friday Night

Partly cloudy, with a low around 64. Southeast wind around 5 mph becoming calm in the evening.

Saturday

Mostly sunny, with a high near 80.

Saturday Night

A slight chance of showers after 2am. Partly cloudy, with a low around 65. Chance of precipitation is 20%.

Sunday

A slight chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.

Sunday Night

A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 67. Chance of precipitation is 30%.

Monday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 40%.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.

Tuesday

A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 50%.

Tuesday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.

Wednesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%.