Chicago's O'Hare saw its first 90 degree day of the year on Wednesday. Midway climbed to 92 degrees and Northerly Island also hit 90.
The normal first 90 degree day of the year usually occurs around June 8th, so this was basically up to par.
Chicago's O'Hare averages 14 days where the temperature climbs to at least 90 degrees.
Midway averages 15 days 90 degrees or higher, with Northerly Island averaging 8 days in the 90s.
The greatest number of consecutive days with a high temperature 90 degrees or higher is 11. The most recent stretch occurred on August 19th – 29th back in 1959.