May in Sherbrooke averages a daily high of 18.7°C with nights around 5.7°C. Expect roughly 13.2 wet days totalling 87.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sherbrooke is June–September.
Based on LENNOXVILLE, QC CA (7.4km), 1995–2024. 28 years of May data.