The temperatures in Rapid City in September are comfortable with low of 13°C and and high up to 24°C.
You can expect about 3 to 8 days of rain in Rapid City during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Rapid City in September 2024.
If you’re planning to visit Rapid City in the near future, we highly recommend that you review the 14 day weather forecast for Rapid City before you arrive.
Temperatures
24° / 13°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
56
mm
Sun Hours
11.6
Hrs
