Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Current conditions at

Washington/Dulles International Airport, DC (KIAD)

Lat: 38.93°NLon: 77.45°WElev: 312ft.

Overcast

72°F

22°C

Humidity	94%
Wind Speed	Calm
Barometer	30.10 in (1019.1 mb)
Dewpoint	70°F (21°C)
Visibility	10.00 mi
Last update	30 Aug 11:52 pm EDT

More Information:

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

Extended Forecast for

3 Miles ESE Chantilly VA

Overnight
Low: 72 °F
Mostly Cloudy
Monday
High: 91 °F
Partly Sunny
then Isolated
T-storms
Monday Night
Low: 74 °F
Mostly Cloudy
Tuesday
High: 96 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 76 °F
Slight Chance
T-storms then
Slight Chance
Showers
Wednesday
High: 97 °F
Mostly Sunny
then Slight
Chance
T-storms
Wednesday Night
Low: 77 °F
Partly Cloudy
Thursday
High: 96 °F
Mostly Sunny
then Chance
Showers
Thursday Night
Low: 73 °F
Chance
Showers

Detailed Forecast

Overnight

Mostly cloudy, with a low around 72. Light southwest wind.

Monday

Isolated showers and thunderstorms after 3pm. Partly sunny, with a high near 91. Light north wind. Chance of precipitation is 20%.

Monday Night

Mostly cloudy, with a low around 74. Light and variable wind.

Tuesday

A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 96. Heat index values as high as 101. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.

Tuesday Night

A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Partly cloudy, with a low around 76. Light west wind. Chance of precipitation is 20%.

Wednesday

A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Mostly sunny and hot, with a high near 97. Chance of precipitation is 20%.

Wednesday Night

Partly cloudy, with a low around 77.

Thursday

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 40%.

Thursday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.

Friday

A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 40%.

Friday Night

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

Saturday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85. Chance of precipitation is 20%.