January in Windsor averages a daily high of 0.7°C with nights around -5.9°C. Expect roughly 14.6 wet days totalling 68.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Windsor is May–June.
Based on WINDSOR RIVERSIDE, ON CA (7.8km), 1995–2024. 30 years of January data.