May in North Bay averages a daily high of 17.1°C with nights around 6°C. Expect roughly 12.8 wet days totalling 86.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit North Bay is June–September.
Based on NORTH BAY A, ON CA (6.7km), 1995–2024. 18 years of May data.