August in Minnetonka averages a daily high of 26.3°C with nights around 15.7°C. Expect roughly 10.1 wet days totalling 119.1mm. 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 August data.