Severe Thunderstorms and Heavy Rainfall Across the Midwest into the Great Lakes Region; Significant Heat in the Southwest

Strong to severe storms may produce damaging winds, isolated hail, and a few tornadoes from the Midwest into the lower Great Lakes. These storms may also produce areas of heavy rain and flash flooding. Significant heat will continue across parts of the Desert Southwest into western Texas and north Alaska. Dangerous heat will also build into the Eastern and Central U.S. and continue into next week. Read More >

Hazardous Weather Conditions

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Thunderstorm

83°F

28°C

Humidity	79%
Wind Speed	SE 5 mph
Barometer	29.87 in (1011.1 mb)
Dewpoint	76°F (24°C)
Visibility	10.00 mi
Heat Index	91°F (33°C)
Last update	18 Jun 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 June 18, 05:59pm until June 18, 08:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch June 18, 05:59pm until June 18, 08:00pm
NOW until 8:00pm Wed
Flood Watch
This Afternoon
High: 87 °F
Severe
Thunderstorms
Tonight
Low: 72 °F
Scattered
T-storms then
Mostly Clear
Juneteenth
High: 91 °F
Sunny then
T-storms
Likely
Thursday Night
Low: 65 °F
T-storms
Likely then
Mostly Clear
Friday
High: 85 °F
Sunny
Friday Night
Low: 66 °F
Partly Cloudy
Saturday
High: 90 °F
Sunny
Saturday Night
Low: 70 °F
Mostly Clear

Detailed Forecast

This Afternoon

Scattered showers and thunderstorms. Some of the storms could be severe. Mostly sunny, with a high near 87. West wind around 7 mph. Chance of precipitation is 50%.

Tonight

Scattered showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 72. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.

Juneteenth

A slight chance of showers, then showers and thunderstorms likely after 2pm. Increasing clouds, with a high near 91. Southwest wind 7 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Showers and thunderstorms likely, mainly before 7pm. Partly cloudy, with a low around 65. Southwest wind 7 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Friday

Sunny, with a high near 85. Northwest wind around 8 mph.

Friday Night

Partly cloudy, with a low around 66.

Saturday

Sunny, with a high near 90.

Saturday Night

Mostly clear, with a low around 70.

Sunday

Mostly sunny, with a high near 95.

Sunday Night

Mostly clear, with a low around 75.