January in Rochester averages a daily high of -5°C with nights around -13.3°C. Expect roughly 9.1 wet days totalling 25.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Rochester is June–September.
Based on ROCHESTER INTERNATIONAL AIRPORT, MN US (13.2km), 1995–2024. 30 years of January data.