January in Louisville averages a daily high of 6.1°C with nights around -3°C. Expect roughly 11.8 wet days totalling 94.4mm. A hard month to visit for comfort alone.
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 January data.