Climate almanac
Saint-Jean-sur-Richelieu
Quebec, Canada · 45.31°, -73.26°
What is the climate like in Saint-Jean-sur-Richelieu?
The best time to visit Saint-Jean-sur-Richelieu is typically September, the year's most comfortable month (6.6/10). Saint-Jean-sur-Richelieu is warmest in July, when daily highs average 81°F (27°C), and coolest in January, when lows fall to about 13°F (-10°C). The wettest month is typically August and the driest is September; the year sees roughly 49 in (1236 mm) of precipitation.
- Best time to visitSeptember — the year's comfort peak (6.6/10)
- Warmest monthJuly — average high 81°F (27°C)
- Coolest monthJanuary — average low 13°F (-10°C)
- Wettest monthAugust (5.2 in (131 mm))
- Driest monthSeptember (3.1 in (78 mm))
- Annual precipitation49 in (1236 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromL'acadie, 7 km away (1994-2026)