Extreme Heat and Excessive Rainfall This Week

A significant heat wave continues for the Rockies, Northern Plains, and Great Lakes into the Mid-Atlantic, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. Excessive rainfall my bring life-threatening and locally catastrophic flash and urban flooding across portions of southwestern Texas through early Friday. Read More >

Hazardous Weather Conditions

Heat Advisory in effect from July 15, 11:00 AM EDT until July 15, 08:00 PM EDT

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

80°F

27°C

Humidity	71%
Wind Speed	SW 5 mph
Barometer	30.05 in (1017.3 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Heat Index	83°F (28°C)
Last update	14 Jul 8:52 pm EDT

More Information:

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

Extended Forecast for

Vienna VA

Heat Advisory July 15, 11:00am until July 15, 08:00pm

Click here for hazard details and duration

Heat Advisory

Tonight
Low: 73 °F
Mostly Clear
Wednesday
High: 101 °F
Hot
Wednesday Night
Low: 79 °F
Mostly Clear
Thursday
High: 101 °F
Sunny then
Slight Chance
T-storms
Thursday Night
Low: 75 °F
Partly Cloudy
Friday
High: 97 °F
Hot
Friday Night
Low: 74 °F
Chance
T-storms
Saturday
High: 91 °F
Showers
Likely
Saturday Night
Low: 73 °F
Showers
Likely then
Chance
T-storms

Detailed Forecast

Tonight

Mostly clear, with a low around 73. West wind around 7 mph.

Wednesday

Sunny and hot, with a high near 101. West wind 6 to 9 mph.

Wednesday Night

Mostly clear, with a low around 79. West wind 6 to 9 mph.

Thursday

A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 101. Heat index values as high as 107. North wind 5 to 8 mph becoming southwest in the morning. Chance of precipitation is 20%.

Thursday Night

Partly cloudy, with a low around 75. West wind 5 to 8 mph becoming light and variable.

Friday

Mostly sunny and hot, with a high near 97.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 30%.

Saturday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 91. Chance of precipitation is 60%.

Saturday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

Sunday

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

Sunday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 30%.

Monday

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

Monday Night

A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 20%.

Tuesday

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