FallPeak season ~77°F highs

Things to do in Waterloo in September

September is one of the best months to visit Waterloo, with average highs around 77°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

Effigy Mounds National Monument

park

2Foliage walks

Pikes Peak State Park

park

3Foliage walks

Upper Mississippi River National Wildlife and Fish Refuge

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 Iowa

Des Moines Sioux City Council Bluffs Davenport Cedar Rapids

Waterloo in September: quick answers

Is September a good time to visit Waterloo?

September is one of the best months to visit Waterloo, with average highs around 77°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Waterloo in September?

Average daytime highs are around 77°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 Waterloo in September?

Top picks for September: Effigy Mounds National Monument, Pikes Peak State Park, Upper Mississippi River National Wildlife and Fish Refuge, Backbone State Park, Cedar Valley Aboretum & Botanic Gardens.