April in Louisville averages a daily high of 20.5°C with nights around 8.5°C. Expect roughly 11.7 wet days totalling 125.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Louisville is April–May.
Based on LOUISVILLE MCALPINE, KY US (3.8km), 1995–2024. 14 years of April data.