January in Manhattan averages a daily high of 4.9°C with nights around -7.5°C. Expect roughly 4.9 wet days totalling 17.4mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Manhattan is September–October.
Based on MANHATTAN, KS US (1.7km), 1995–2024. 30 years of January data.