Peoria
FallPeak season ~81°F highs
Things to do in Peoria in September
September is one of the best months to visit Peoria, with average highs around 81°F. Crisp air and changing leaves make parks and viewpoints shine.
Best picks for September
What's famous here, weighted toward what shines in September.
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 Illinois
Peoria in September: quick answers
Is September a good time to visit Peoria?
September is one of the best months to visit Peoria, with average highs around 81°F. Crisp air and changing leaves make parks and viewpoints shine.
What is the weather like in Peoria in September?
Average daytime highs are around 81°F, compared with 87°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 Peoria in September?
Top picks for September: Starved Rock State Park, Matthiessen State Park, Matthiessen State Park, Sand Ridge State Forest, Chautauqua National Wildlife Refuge.
