1988 was weird, with a large drought, a scorching 104 degrees at Toledo in late June, then lows in the 40's for the end of the month of June.
As for my area, it was +10.44F on the Monday-Friday period, some heat indices to 100 multiple times for the general area
here is a heat index of 101 at KTDZ yesterday, before a brief thunderstorm outflow cooled the temperature to 85 (but it went back up)
Oh, by the way, thankfully some significant rainfall to help the grass. The grass started to get brown when it was 99 or 100. But it got a bit better. Heavy rainfall happened in various amounts around Toledo on Wed/Thurs.
Thursday's precipitation amounts indicate lake-breeze boundaries had a huge effect.