Weather Prediction September 2024. The month was also fairly dry across the region, with chicago and rockford finishing with. The number 1 denotes the warmest september on record (since 1893), 132.

As we head into fall, will temperatures remain moderate, or will summer (in the form of hot weather) make a return? September 2024 featured above normal temperatures and ended up tying 1908 and 1960 for the 2nd warmest september on record in chicago.