FallPeak season ~78°F highs

Things to do in Rapid City in September

September is one of the best months to visit Rapid City, with average highs around 78°F. Crisp air and changing leaves make parks and viewpoints shine.

Plan a September weekend Where else in September

Best picks for September

What's famous here, weighted toward what shines in September.

Mount Rushmore

mountain in South Dakota featuring a sculpture of four US presidents

Mount Rushmore National Memorial

mountain in South Dakota featuring a sculpture of four US presidents

3Foliage walks

Badlands National Park

national park in South Dakota, United States

Holidays in September 2027

Labour Day · Mon, Sep 6

Expect busier roads and pricier stays around these dates. See long weekends.

Rapid City in September: quick answers

Is September a good time to visit Rapid City?

September is one of the best months to visit Rapid City, with average highs around 78°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Rapid City in September?

Average daytime highs are around 78°F, compared with 84°F in the warmest month. Check the forecast a week out; our planner favors indoor stops on rainy days.

What are the best things to do in Rapid City in September?

Top picks for September: Mount Rushmore, Mount Rushmore National Memorial, Badlands National Park, Wind Cave National Park, Jewel Cave National Monument.