April in Fishers averages a daily high of 17.1°C with nights around 4.9°C. Expect roughly 12 wet days totalling 112.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Fishers is September–October.
Based on CARMEL 3 E, IN US (3.9km), 1995–2024. 24 years of April data.