January in Jackson averages a daily high of 6.1°C with nights around -4.4°C. Expect roughly 8.1 wet days totalling 94.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Jackson is April–May.
Based on INDIAN MILLS 2 W, NJ US (7.4km), 1995–2024. 30 years of January data.