November in Newmarket averages a daily high of 7.4°C with nights around -1.4°C. Expect roughly 12.7 wet days totalling 60.3mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Newmarket is May–September.
Based on BALDWIN, ON CA (26.9km), 1995–2024. 17 years of November data.