September in Aurora averages a daily high of 24.9°C with nights around 12.7°C. Expect roughly 8.1 wet days totalling 78.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Aurora is August–September.
Based on AURORA WATER, IL US (2.4km), 1995–2024. 30 years of September data.