Saint-Marc-sur-Richelieu Weather in September

In Saint-Marc-sur-Richelieu, September brings high daytime temperatures around 22°C (72°F), with nights cooling to 10°C (50°F). Expect quite a bit of rainfall this month.

Rainfall in Saint-Marc-sur-Richelieu in September

This month experiences about 11 days of rain according to historical data, averaging 101 mm (4 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Saint-Marc-sur-Richelieu in September

Temperatures in Saint-Marc-sur-Richelieu in September top out at 22°C (72°F) and drop to 10°C (50°F) overnight. This kind of day-to-night contrast is typical for this time of year. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Saint-Marc-sur-Richelieu in September

You can expect a moderate amount of sunlight, with approximately 183 hours. This means a pleasant mix of sun and overcast.

If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August and September typically offer the best circumstances for Saint-Marc-sur-Richelieu.