September in Coon Rapids averages a daily high of 23.3°C with nights around 11.4°C. Expect roughly 8.8 wet days totalling 72.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Coon Rapids is May–June.
Based on MINNEAPOLIS CRYSTAL AIRPORT, MN US (8.1km), 1995–2024. 27 years of September data.