Average data for 10 years
1 September
Monday
+25°
+21°
2 September
Tuesday
+26°
+20°
3 September
Wednesday
+25°
+20°
4 September
Thursday
+24°
+18°
5 September
Friday
+25°
+19°
6 September
Saturday
+25°
+18°
7 September
Sunday
+25°
+19°
8 September
Monday
+26°
+19°
9 September
Tuesday
+23°
+19°
10 September
Wednesday
+24°
+17°
11 September
Thursday
+24°
+18°
12 September
Friday
+22°
+18°
13 September
Saturday
+22°
+16°
14 September
Sunday
+22°
+17°
15 September
Monday
+22°
+16°
16 September
Tuesday
+22°
+16°
17 September
Wednesday
+22°
+17°
18 September
Thursday
+23°
+17°
19 September
Friday
+24°
+18°
20 September
Saturday
+23°
+18°
21 September
Sunday
+24°
+18°
22 September
Monday
+22°
+18°
23 September
Tuesday
+22°
+17°
24 September
Wednesday
+22°
+16°
25 September
Thursday
+22°
+16°
26 September
Friday
+24°
+17°
27 September
Saturday
+22°
+18°
28 September
Sunday
+22°
+16°
29 September
Monday
+20°
+15°
30 September
Tuesday
+21°
+16°
Cities with similar weather in September
Armenia
Yerevan
Kyrgyzstan
Bishkek
Montenegro
Podgorica
Italy
Genoa
Azerbaijan
Gyandja
In September, the weather in Sioux City is typically warm. Average daily high temperature in September is about 23 degrees above zero. On average, Sioux City has 20 sunny, 6 partly cloudy, and 4 rainy days in September. The rains are usually light. September as well as August is considered the most comfortable time to visit Sioux City.