May in Prince George averages a daily high of 18°C with nights around 4.3°C. Expect roughly 11.4 wet days totalling 48.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Prince George is May–August.
Based on PRINCE GEORGE STP, BC CA (3.8km), 1995–2024. 27 years of May data.