Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

76°F

24°C

Humidity	79%
Wind Speed	W 3 mph
Barometer	29.88 in (1011.6 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	77°F (25°C)
Last update	12 Aug 11:52 pm EDT

More Information:

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

Extended Forecast for

Reston VA

Overnight
Low: 71 °F
Mostly Cloudy
Thursday
High: 89 °F
Mostly Sunny
Thursday Night
Low: 71 °F
Mostly Cloudy
Friday
High: 84 °F
Chance
Showers
Friday Night
Low: 68 °F
Chance
Showers
Saturday
High: 85 °F
Mostly Sunny
Saturday Night
Low: 69 °F
Mostly Cloudy
then Slight
Chance
T-storms
Sunday
High: 87 °F
Chance
T-storms
Sunday Night
Low: 72 °F
Chance
T-storms

Detailed Forecast

Overnight

Mostly cloudy, with a low around 71. West wind 3 to 5 mph.

Thursday

Mostly sunny, with a high near 89. Northwest wind 5 to 8 mph.

Thursday Night

Mostly cloudy, with a low around 71. Light north wind.

Friday

A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 84. Light north wind. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.

Saturday

Mostly sunny, with a high near 85.

Saturday Night

A slight chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 20%.

Sunday

A slight chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.

Sunday Night

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

Monday

A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88. Chance of precipitation is 40%.

Monday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

Tuesday

Sunny, with a high near 86.

Tuesday Night

Mostly clear, with a low around 68.

Wednesday

A slight chance of showers. Mostly sunny, with a high near 88. Chance of precipitation is 20%.