Weather in Sioux City in September

The weather in 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
Full weather report for today ››

Weather forecast for the next 14 days ››

Weather Facts - Sioux City in September

* The warmest temperature recorded in in September is 38°C
* The coldest temperature recorded in Sioux City in September is (-4°C)
* The average rainfall in Sioux City in September is 72 mm

Yearly Average for Sioux City

Max Temp
Min Temp
Rainy Days
Jan.
1°
(-12°)
9
Feb.
3°
(-9°)
9
March
10°
(-4°)
12
April
18°
3°
14
May
24°
9°
17
June
29°
14°
15
July
30°
17°
14
August
29°
16°
15
Sep.
26°
10°
13
Oct.
20°
4°
10
Nov.
10°
(-4°)
10
Dec.
2°
(-10°)
10

Average Temperature in Sioux City