April in Dayton averages a daily high of 18.4°C with nights around 6°C. Expect roughly 12.6 wet days totalling 110.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Dayton is September–October.
Based on DAYTON MCD, OH US (2.5km), 1995–2024. 27 years of April data.