Weather in Waukesha in September
Waukesha temperatures in September range from 10 to 24 and there is an average of 13 days of rain.
Avg Temp
10° - 24°
Avg Rainy Days
13
Avg Dry Days
17
Avg Snow Days
0
Weather Facts - Waukesha in September
* The warmest temperature recorded in in September is 34°C
* The coldest temperature recorded in Waukesha in September is (-3°C)
* The average rainfall in Waukesha in September is 134 mm