ClimaGo › Chicago › Weather in September
United States
September offers pleasant fall weather with temperatures cooling to the comfortable 70s, making it excellent for exploring downtown architecture and attending outdoor concerts before the season transitions to winter.
Avg High
24°C
Avg Low
16°C
Daily Rain
3.4mm
Rainfall
Moderate
✅ September is one of the best months to visit Chicago!
Chicago's architectural masterpieces, deep dish pizza and lakefront beauty showcase Midwest sophistication.