Illlinois September was a fall-summer mix
October 11, 2023
Sept. is typically the month when summer turns to fall. This year, however, Sept. started with fall-like weather and ended with a shot of summer, according to Illinois State Climatologist Trent Ford, at the Illinois State Water Survery
Sept. average temperatures ranged from the mid-60s in northern Ill. to the low 70s in southern Ill., between 1 and 4 degrees above normal. Several Ill. locations hit highs in the low 90s in the latter half of Sept., including 37 degrees in Joilet and 39 degrees in Stockton.
Overall, the preliminary statewide average Sept. temperature was 68.1 degrees, 1.3 deg...