FallPeak season ~83°F highs

Things to do in Twin Falls in September

September is one of the best months to visit Twin Falls, with average highs around 83°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.

1Foliage walks

City of Rocks National Reserve

United States National Reserve and state park

2Foliage walks

Hagerman Fossil Beds National Monument

national monument in the United States

Shoshone Falls

waterfall on the Snake River in Twin Falls and Jerome counties in Idaho, United States

Holidays in September 2027

Labour Day · Mon, Sep 6

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

Also great in September in Idaho

Boise

Twin Falls in September: quick answers

Is September a good time to visit Twin Falls?

September is one of the best months to visit Twin Falls, with average highs around 83°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Twin Falls in September?

Average daytime highs are around 83°F, compared with 92°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 Twin Falls in September?

Top picks for September: City of Rocks National Reserve, Hagerman Fossil Beds National Monument, Shoshone Falls, Thousand Springs State Park, Bruneau-Jarbidge Rivers Wilderness.