SpringPeak season ~70°F highs

Things to do in Waterloo in May

May is one of the best months to visit Waterloo, with average highs around 70°F. Blooming parks and mild days make it easy to pack in sights.

Plan a May weekend Where else in May

Best picks for May

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

1Spring blooms

Effigy Mounds National Monument

park

2Spring blooms

Pikes Peak State Park

park

3Spring blooms

Upper Mississippi River National Wildlife and Fish Refuge

Holidays in May 2027

Memorial Day · Mon, May 31

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

Also great in May in Iowa

Des Moines Sioux City Council Bluffs Davenport Cedar Rapids

Waterloo in May: quick answers

Is May a good time to visit Waterloo?

May is one of the best months to visit Waterloo, with average highs around 70°F. Blooming parks and mild days make it easy to pack in sights.

What is the weather like in Waterloo in May?

Average daytime highs are around 70°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 May?

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