September in Minnetonka averages a daily high of 22.5°C with nights around 11.3°C. Expect roughly 9.1 wet days totalling 78.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Minnetonka is May–September.
Based on CHANHASSEN WSFO, MN US (8.6km), 1995–2024. 29 years of September data.