FallPeak season ~74°F highs

Things to do in Green Bay in September

September is one of the best months to visit Green Bay, with average highs around 74°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.

Lincoln Park Zoo

zoo located in Lincoln Park in Chicago, Illinois

2Foliage walks

Cherney Maribel Caves County Park

county park in Wisconsin (US)

3Foliage walks

Green Bay National Wildlife Refuge

American protected area

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 Wisconsin

Milwaukee Madison Eau Claire Oshkosh La Crosse

Green Bay in September: quick answers

Is September a good time to visit Green Bay?

September is one of the best months to visit Green Bay, with average highs around 74°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Green Bay in September?

Average daytime highs are around 74°F, compared with 82°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 Green Bay in September?

Top picks for September: Lincoln Park Zoo, Cherney Maribel Caves County Park, Green Bay National Wildlife Refuge, Green Bay National Wildlife Refuge, Newport State Park.