January in Kingston averages a daily high of -2.9°C with nights around -11.4°C. Expect roughly 12.7 wet days totalling 79.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Kingston is May–September.
Based on HARTINGTON IHD, ON CA (27.8km), 1995–2024. 30 years of January data.