March in Montréal averages a daily high of 3.3°C with nights around -4.5°C. Expect roughly 13.1 wet days totalling 86.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Montréal is May–September.
Based on MCTAVISH, QC CA (1km), 1995–2024. 27 years of March data.