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Today Hourly 7 days 30 days September
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September 2026 Weather | Sioux City, Iowa

Today 9/1
Stormy Weather
Day 90°
Night 66°
61
Wed 9/2
Cloudy Weather
Day 90°
Night 66°
25
Thu 9/3
Cloudy Weather
Day 93°
Night 70°
15
Fri 9/4
Cloudy Weather
Day 95°
Night 68°
25
Sat 9/5
Sunny with a Chance of Thunderstorms
Day 93°
Night 66°
68
Sun 9/6
Cloudy Weather
Day 91°
Night 66°
55
Mon 9/7
Cloudy Weather
Day 84°
Night 66°
25
Tue 9/8
Cloudy Weather
Day 84°
Night 63°
60
Wed 9/9
Cloudy Weather
Day 82°
Night 61°
40
Thu 9/10
Sunny Weather
Day 84°
Night 57°
2
Fri 9/11
Cloudy Weather
Day 79°
Night 54°
2
Sat 9/12
Cloudy Weather
Day 81°
Night 55°
5
Sun 9/13
Cloudy Weather
Day 79°
Night 55°
6
Mon 9/14
Sunny Weather
Day 77°
Night 52°
5
Tue 9/15
Cloudy Weather
Day 82°
Night 57°
20
Wed 9/16
Cloudy Weather
Day 82°
Night 57°
Thu 9/17
Cloudy Weather
Day 82°
Night 59°
Fri 9/18
Rainy Weather
Day 82°
Night 57°
Sat 9/19
Sunny Weather
Day 82°
Night 55°
Sun 9/20
Cloudy Weather
Day 81°
Night 57°
Mon 9/21
Sunny Weather
Day 82°
Night 57°
Tue 9/22
Sunny Weather
Day 82°
Night 59°
Wed 9/23
Sunny Weather
Day 82°
Night 57°
Thu 9/24
Sunny Weather
Day 82°
Night 57°
Fri 9/25
Sunny Weather
Day 81°
Night 57°
Sat 9/26
Sunny Weather
Day 81°
Night 55°
Sun 9/27
Sunny Weather
Day 81°
Night 55°
Mon 9/28
Cloudy Weather
Day 81°
Night 55°
Tue 9/29
Cloudy Weather
Day 81°
Night 55°
Wed 9/30
Cloudy Weather
Day 81°
Night 55°

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