CHICAGO (CBS) -- Chicago set a new record for heat on Wednesday, as the temperature hit 90 degrees at O'Hare International Airport, the hottest it's ever been in Chicago on May 11.

The temperature breaks the previous May 11 record high of 89 degrees set in 1982, when Jane Byrne was mayor. 

We did reach 90 degrees a day before on May 10 the same year. Prior to that, we reached 90 degrees on April 22, 1980.

There have only been 14 years since 1872 when Chicago reached 90 by May 11 -- including this year. 

IWith dew points in the 70s, heat index values in the Chicago area hit as high as 100 degrees in Aurora.  

Meanwhile, wind flow off the lake continues to pull cooler air inland. Milwaukee fell 20 degrees in just one hour as the lake breeze front passed through. 

Isolated, but intense storms were also seen to the west early Wednesday evening. A severe thunderstorm warning was issued until 7 p.m. for parts of LaSalle County, but the rest of the area was quiet.

The low on Wednesday night is 68 with partly cloudy, muggy, and mild conditions.

Hot weather stays with us to close the workweek. We expect to hit 90 again on Thursday with mostly sunny conditions.

The record high for May 12 is 92 degrees, set in 1956 when Mayor Richard J. Daley was one year into his time in office.

Storm chances arrive Friday night into Saturday with our cold front, which will bring more seasonable weather our way from Sunday and into next week.