August in Louisville averages a daily high of 30.8°C with nights around 20.4°C. Expect roughly 8.2 wet days totalling 85.2mm. 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. 14 years of August data.