September in La Haute-Saint-Charles averages a daily high of 19.6°C with nights around 8.6°C. Expect roughly 11.4 wet days totalling 107.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit La Haute-Saint-Charles is June–September.
Based on QUEBEC JEAN LESAGE INTERNATIONAL, QC CA (10.1km), 1995–2024. 28 years of September data.