September in Kentwood averages a daily high of 23.5°C with nights around 11.8°C. Expect roughly 9.4 wet days totalling 77mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Kentwood is May–September.
Based on GRAND RAPIDS GERALD R FORD INTERNATIONAL AIRPORT, MI US (8.6km), 1995–2024. 30 years of September data.