September in Repentigny averages a daily high of 21.3°C with nights around 10.9°C. Expect roughly 9 wet days totalling 92.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Repentigny is May–September.
Based on RIVIERE DES PRAIRIES, QC CA (6.1km), 1995–2024. 27 years of September data.