Weather in Joliet in September
Joliet temperatures in September range from 15 to 25 and there is an average of 10 days of rain.
Avg Temp
15° - 25°
Avg Rainy Days
10
Avg Dry Days
20
Avg Snow Days
0
Weather Facts - Joliet in September
* The warmest temperature recorded in in September is 34°C
* The coldest temperature recorded in Joliet in September is 6°C
* The average rainfall in Joliet in September is 60 mm