January in Cincinnati averages a daily high of 4.9°C with nights around -4.5°C. Expect roughly 10.7 wet days totalling 71.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Cincinnati is September–October.
Based on CINCINNATI MUNICIPAL AIRPORT LUNKEN FIELD, OH US (8.8km), 1995–2024. 30 years of January data.