September in Sherbrooke averages a daily high of 20.8°C with nights around 8.2°C. Expect roughly 10.3 wet days totalling 87.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Sherbrooke is June–September.
Based on LENNOXVILLE, QC CA (7.4km), 1995–2024. 27 years of September data.