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Today Hourly 7 days 30 days September
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September 2025 Weather | Sioux Falls, South Dakota

Today 9/8
Sunny with a Chance of Thunderstorms
Day 79°
Night 61°
80
Tue 9/9
Sunny with a Chance of Thunderstorms
Day 82°
Night 57°
55
Wed 9/10
Cloudy Weather
Day 82°
Night 63°
4
Thu 9/11
Cloudy Weather
Day 88°
Night 66°
9
Fri 9/12
Cloudy Weather
Day 86°
Night 66°
55
Sat 9/13
Partly Sunny with Showers
Day 88°
Night 63°
60
Sun 9/14
Cloudy Weather
Day 81°
Night 57°
25
Mon 9/15
Cloudy Weather
Day 79°
Night 59°
55
Tue 9/16
Cloudy Weather
Day 79°
Night 57°
1
Wed 9/17
Cloudy Weather
Day 84°
Night 61°
55
Thu 9/18
Cloudy Weather
Day 81°
Night 59°
3
Fri 9/19
Cloudy Weather
Day 81°
Night 57°
8
Sat 9/20
Cloudy Weather
Day 77°
Night 57°
55
Sun 9/21
Sunny Weather
Day 73°
Night 59°
5
Mon 9/22
Cloudy Weather
Day 70°
Night 54°
10
Tue 9/23
Cloudy Weather
Day 72°
Night 55°
20
Wed 9/24
Cloudy Weather
Day 73°
Night 54°
10
Thu 9/25
Cloudy Weather
Day 75°
Night 55°
25
Fri 9/26
Sunny Weather
Day 77°
Night 55°
20
Sat 9/27
Rainy Weather
Day 75°
Night 50°
59
Sun 9/28
Cloudy Weather
Day 63°
Night 45°
20
Mon 9/29
Cloudy Weather
Day 63°
Night 43°
25
Tue 9/30
Cloudy Weather
Day 64°
Night 54°
59