Weather in South Sioux City in September
The weather in South Sioux City in September varies radically. Daytime is relatively hot since temperatures get higher than 26 degrees, while the nights are much colder and there are no more than 10 degrees. Therefore, it is recommended to pack for both warm and chilly conditions
Avg Temp
10° - 26°
Avg Rainy Days
13
Avg Dry Days
17
Avg Snow Days
0
Weather Facts - South Sioux City in September
* The warmest temperature recorded in in September is 38°C
* The coldest temperature recorded in South Sioux City in September is (-4°C)
* The average rainfall in South Sioux City in September is 72 mm