Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. 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

89°F

32°C

Humidity	47%
Wind Speed	S 9 mph
Barometer	30.03 in (1015.6 mb)
Dewpoint	66°F (19°C)
Visibility	10.00 mi
Heat Index	92°F (33°C)
Last update	15 Aug 6:53 pm CDT

More Information:

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

Extended Forecast for

3 Miles ESE Chicago IL

Tonight
Low: 75 °F
Chance
T-storms
Saturday
High: 90 °F
Chance
Showers then
Chance
T-storms
Saturday Night
Low: 74 °F
Chance
T-storms
Sunday
High: 83 °F
Slight Chance
T-storms
Sunday Night
Low: 74 °F
Partly Cloudy
then Slight
Chance
T-storms
Monday
High: 90 °F
Chance
T-storms
Monday Night
Low: 75 °F
Chance
T-storms
Tuesday
High: 83 °F
Chance
T-storms
Tuesday Night
Low: 70 °F
Mostly Cloudy

Detailed Forecast

Tonight

A 30 percent chance of showers and thunderstorms, mainly after 11pm. Partly cloudy, with a low around 75. East southeast wind 5 to 10 mph becoming south southwest after midnight.

Saturday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 90. South southwest wind 5 to 10 mph becoming east in the afternoon.

Saturday Night

A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. East southeast wind 5 to 10 mph becoming west after midnight.

Sunday

A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Northeast wind 5 to 10 mph, with gusts as high as 15 mph.

Sunday Night

A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74. Northeast wind 5 to 10 mph becoming east southeast after midnight.

Monday

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

Monday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75.

Tuesday

A chance of showers and thunderstorms. Mostly sunny, with a high near 83.

Tuesday Night

Mostly cloudy, with a low around 70.

Wednesday

Mostly sunny, with a high near 76.

Wednesday Night

Mostly clear, with a low around 68.