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Today Hourly 7 days 30 days September
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September 2026 Weather | Rapid City, South Dakota

Today 9/21
Rainy Weather
Day 59°
Night 50°
86
Tue 9/22
Cloudy Weather
Day 66°
Night 57°
6
Wed 9/23
Stormy Weather
Day 81°
Night 55°
55
Thu 9/24
Sunny Weather
Day 77°
Night 54°
7
Fri 9/25
Partly Sunny with Showers
Day 79°
Night 57°
90
Sat 9/26
Cloudy Weather
Day 73°
Night 52°
10
Sun 9/27
Cloudy Weather
Day 72°
Night 57°
8
Mon 9/28
Cloudy Weather
Day 70°
Night 50°
0
Tue 9/29
Stormy Weather
Day 64°
Night 48°
80
Wed 9/30
Rainy Weather
Day 66°
Night 52°
68

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