Heavy Rainfall Possible in the Upper Midwest, South Texas, and Puerto Rico and the Virgin Islands

Scattered thunderstorms and heavy rainfall may bring areas of flooding though the weekend over the Upper Midwest. A tropical disturbance will bring moderate to locally heavy rain to portions of South Texas into Saturday. Tropical Storm Erin may bring isolated flash and urban flooding, landslides or mudslides, and tropical storm conditions to Puerto Rico and the U.S. Virgin Islands. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Mostly Cloudy

80°F

27°C

Humidity	54%
Wind Speed	S 7 mph
Barometer	30.10 in (1018.3 mb)
Dewpoint	62°F (17°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	15 Aug 8:53 am CDT

More Information:

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

Extended Forecast for

Westchester IL

Today
High: 91 °F
Mostly Sunny
Tonight
Low: 74 °F
Partly Cloudy
then Slight
Chance
T-storms
Saturday
High: 93 °F
Slight Chance
T-storms
Saturday Night
Low: 75 °F
Chance
T-storms
Sunday
High: 90 °F
Chance
T-storms
Sunday Night
Low: 73 °F
Slight Chance
T-storms
Monday
High: 92 °F
Chance
T-storms
Monday Night
Low: 74 °F
Chance
T-storms
Tuesday
High: 88 °F
Chance
T-storms

Detailed Forecast

Today

Mostly sunny, with a high near 91. South southwest wind around 5 mph.

Tonight

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. South southeast wind around 5 mph becoming calm in the evening.

Saturday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 93. Heat index values as high as 102. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

Saturday Night

A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 75. South southwest wind 5 to 10 mph becoming light and variable.

Sunday

A 30 percent chance of showers and thunderstorms, mainly before 10am. Mostly sunny, with a high near 90. East northeast wind 5 to 10 mph, with gusts as high as 15 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.

Monday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.

Monday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 74.

Tuesday

A chance of showers and thunderstorms. Partly sunny, with a high near 88.

Tuesday Night

Mostly cloudy, with a low around 70.

Wednesday

Partly sunny, with a high near 80.