Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Partly Cloudy

81°F

27°C

Humidity	53%
Wind Speed	S 7 mph
Barometer	30.09 in (1018.8 mb)
Dewpoint	62°F (17°C)
Visibility	10.00 mi
Heat Index	82°F (28°C)
Last update	26 Aug 11:52 am EDT

More Information:

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

Extended Forecast for

3 Miles WNW Catharpin VA

This Afternoon
High: 87 °F
Partly Sunny
Tonight
Low: 69 °F
Mostly Cloudy
Thursday
High: 89 °F
Partly Sunny
then Showers
Likely
Thursday Night
Low: 67 °F
Severe
Thunderstorms
then Chance
Showers
Friday
High: 86 °F
Partly Sunny
then Slight
Chance
T-storms
Friday Night
Low: 66 °F
Slight Chance
T-storms then
Slight Chance
Showers
Saturday
High: 85 °F
Partly Sunny
Saturday Night
Low: 67 °F
Partly Cloudy
Sunday
High: 88 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Partly sunny, with a high near 87. South wind 7 to 9 mph.

Tonight

Mostly cloudy, with a low around 69. South wind around 8 mph.

Thursday

A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 89. South wind 7 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday Night

A chance of showers and thunderstorms before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 67. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.

Friday

A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%.

Friday Night

A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 20%.

Saturday

Partly sunny, with a high near 85.

Saturday Night

Partly cloudy, with a low around 67.

Sunday

Mostly sunny, with a high near 88.

Sunday Night

Mostly clear, with a low around 70.

Monday

Sunny, with a high near 92.

Monday Night

Partly cloudy, with a low around 72.