May in Louisville averages a daily high of 25.7°C with nights around 14.5°C. Expect roughly 12.3 wet days totalling 123.9mm. 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 May data.