A record-high temperature was recorded Wednesday for the Chicago area after nearly a century.
Chicago had not reached 91 degrees on Sept. 20 since 1931. The record was tied at 1:50 p.m., then broken, when the city peaked at 92 degrees soon after.
A few scattered showers could be in store for Wednesday evening and isolated storms overnight are be possible, too.
It will remain partly cloudy, hazy, mild and humid with lows in the upper 60s to low 70s.
Thursday will see highs in the mid to upper 80s before fall officially begins on Friday.