Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Mostly Cloudy

85°F

29°C

Humidity	55%
Wind Speed	E 9 mph
Barometer	30.07 in (1018.0 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	4 Aug 5:52 pm EDT

More Information:

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

Extended Forecast for

3 Miles NNW Catharpin VA

Tonight
Low: 70 °F
Mostly Cloudy
then Showers
Likely
Wednesday
High: 85 °F
Showers
Likely and
Patchy Fog
then Chance
T-storms
Wednesday Night
Low: 71 °F
Chance
T-storms then
Chance
Showers
Thursday
High: 90 °F
Sunny then
Chance
T-storms
Thursday Night
Low: 71 °F
Chance
T-storms then
Slight Chance
Showers
Friday
High: 89 °F
Sunny then
Chance
T-storms
Friday Night
Low: 70 °F
Chance
T-storms
Saturday
High: 89 °F
Mostly Sunny
then Chance
T-storms
Saturday Night
Low: 69 °F
Chance
T-storms

Detailed Forecast

Tonight

A slight chance of showers before 2am, then a chance of showers and thunderstorms between 2am and 5am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 70. East wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday

Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 85. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night

A chance of thunderstorms before midnight, then a chance of showers and thunderstorms between midnight and 1am. Mostly cloudy during the early evening, then gradual clearing, with a low around 71. Southeast wind around 6 mph. Chance of precipitation is 30%.

Thursday

A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 90. Heat index values as high as 100. South wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 71. Southwest wind 3 to 7 mph. Chance of precipitation is 30%.

Friday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.

Saturday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 50%.

Saturday Night

A chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.

Sunday

Mostly sunny, with a high near 89.

Sunday Night

Partly cloudy, with a low around 71.