September in Springfield averages a daily high of 25.5°C with nights around 11.7°C. Expect roughly 8.8 wet days totalling 87.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Springfield is August–October.
Based on SPRINGFIELD WATER TREATMENT PLANT, OH US (5.5km), 1995–2024. 29 years of September data.