FallPeak season ~76°F highs

Things to do in Casper in September

September is one of the best months to visit Casper, with average highs around 76°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

Ayres Natural Bridge State Park

natural park in Wyoming

2Foliage walks

Glendo State Park

State Park in Converse and Platte counties, Wyoming

3Foliage walks

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 Wyoming

Sheridan Rock Springs Laramie

Casper in September: quick answers

Is September a good time to visit Casper?

September is one of the best months to visit Casper, with average highs around 76°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Casper in September?

Average daytime highs are around 76°F, compared with 88°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 Casper in September?

Top picks for September: Ayres Natural Bridge State Park, Glendo State Park, Douglas Railroad Interpretive Center, Edness K. Wilkins State Park, Beartrap Meadow County Park.