December in Sherbrooke averages a daily high of -0.5°C with nights around -9.1°C. Expect roughly 15.7 wet days totalling 83.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Sherbrooke is June–September.
Based on LENNOXVILLE, QC CA (7.4km), 1995–2024. 27 years of December data.