July in Louisville averages a daily high of 31.5°C with nights around 21.1°C. Expect roughly 10.1 wet days totalling 100.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Louisville is April–May.
Based on LOUISVILLE MCALPINE, KY US (3.8km), 1995–2024. 13 years of July data.