December in Pierrefonds averages a daily high of -1.2°C with nights around -8.5°C. Expect roughly 14.6 wet days totalling 84mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Pierrefonds is May–September.
Based on STE ANNE DE BELLEVUE 1, QC CA (4.3km), 1995–2024. 27 years of December data.