March in Saint-Hyacinthe averages a daily high of 2.7°C with nights around -6.5°C. Expect roughly 11.5 wet days totalling 63.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Saint-Hyacinthe is May–September.
Based on ST HYACINTHE 2, QC CA (7.8km), 1995–2024. 26 years of March data.