Severe Thunderstorms and Heavy Rain from the Plains to the Mid-Atlantic; Ongoing Heat in the South

Severe thunderstorms and showers pose a risk for excessive rain, localized flash flooding, strong gusts and/or large hail across portions of the northern and central Plains, the Lower Missouri to Lower Ohio Valleys, and across the Mid-Atlantic this afternoon and evening. Extreme heat is ongoing over the Desert Southwest and the Southeast U.S.. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Rain Fog/Mist

74°F

23°C

Humidity	94%
Wind Speed	N 5 mph
Barometer	29.86 in (1011.0 mb)
Dewpoint	72°F (22°C)
Visibility	2.00 mi
Last update	9 Jul 5:52 pm EDT

More Information:

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

Extended Forecast for

Reston VA

Flood Watch July 9, 06:43pm until July 9, 11:00pm

Severe T-storm Watch July 9, 06:43pm until July 9, 10:00pm

Click here for hazard details and duration

...

Flood Watch July 9, 06:43pm until July 9, 11:00pm
Severe T-storm Watch July 9, 06:43pm until July 9, 10:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Tonight
Low: 70 °F
Severe
Thunderstorms
then Partly
Cloudy
Friday
High: 89 °F
Mostly Sunny
then Chance
T-storms
Friday Night
Low: 70 °F
Chance
T-storms then
Isolated
Showers
Saturday
High: 83 °F
Showers
Likely
Saturday Night
Low: 66 °F
Showers
Likely then
Slight Chance
Showers
Sunday
High: 83 °F
Partly Sunny
Sunday Night
Low: 65 °F
Mostly Cloudy
Monday
High: 84 °F
Mostly Sunny

Detailed Forecast

Tonight

Showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Some of the storms could be severe. Low around 70. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 89. West wind 5 to 7 mph. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms before 11pm, then isolated showers. Mostly cloudy, with a low around 70. Light and variable wind. Chance of precipitation is 40%.

Saturday

A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Northwest wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. Light north wind. Chance of precipitation is 60%.

Sunday

Partly sunny, with a high near 83.

Sunday Night

Mostly cloudy, with a low around 65.

Monday

Mostly sunny, with a high near 84.

Monday Night

Partly cloudy, with a low around 64.

Tuesday

Sunny, with a high near 88.

Tuesday Night

Mostly clear, with a low around 68.