May in Fishers averages a daily high of 22.7°C with nights around 10.9°C. Expect roughly 12.3 wet days totalling 115mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Fishers is September–October.
Based on CARMEL 3 E, IN US (3.9km), 1995–2024. 22 years of May data.