January in Rock Hill averages a daily high of 11.9°C with nights around 0.7°C. Expect roughly 9.9 wet days totalling 95.1mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Rock Hill is April–May.
Based on WINTHROP UNIVERSITY, SC US (1.8km), 1995–2024. 25 years of January data.