Chicago weather by month › September
Chicago in September: weather and what to expect
Yes. September is one of the best months to visit Chicago.
September weather in Chicago
Daytime high76°F 25°C
Night low56°F 13°C
Rain3.2 in 81 mm
AirComfortable
SunSunny
In September, Chicago averages highs of 76°F (25°C) and lows of 56°F (13°C), with 3.2 in (81 mm) of rain. The air feels comfortable and the sun is sunny. 1991–2020 averages, not a forecast.
Pack: light layers.
Places with the same weather in September
Match out of 100 for September, one city per country.
- Bordeaux France · 76°F highs96
- Petrópolis Brazil · 75°F highs93
- Turin Italy · 76°F highs93
- Hamilton Canada · 73°F highs92
- Corrientes Argentina · 77°F highs92
- Shenyang China · 77°F highs91
Jan · Feb · Mar · Apr · May · Jun · Jul · Aug · Sep · Oct · Nov · Dec