Last updated: June 18, 2025
In Saint-Leonard, Canada, the average temperature in September is a mild 13°C (56°F). Visitors can expect a range from a chilly -3°C (27°F) to a warm 28°C (83°F). During this month, precipitation averages 106 mm (4.2 in) spread over 11 days, with humidity levels hovering around 85%. Prepare for a mix of weather as you explore this vibrant locale!
In September in Saint-Leonard, the average temperature is 13°C (56°F). The maximum can reach 28°C (83°F), and the minimum can be as low as -3°C (27°F). Travelers should be prepared for a wide range of temperatures during this time, ensuring they pack accordingly for both warm and cool weather.
In Saint-Leonard in September, the precipitation amount is 106 mm (4.2 in) spread over a duration of 11 days.
In Saint-Leonard in September humidity is 85%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that wraps around you, making outdoor activities feel heavier and less enjoyable, as layers of clothing cling to the skin and breath becomes visible in the moist air.
In Saint-Leonard in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Saint-Leonard.
UV Risk Categories
Weather in Saint-Leonard varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Saint-Leonard, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -11°C (13°F) | 92 mm (3.6 inches) | 93% | low |
| February Weather | -9°C (15°F) | 75 mm (2.9 inches) | 92% | moderate |
| March Weather | -5°C (24°F) | 76 mm (3.0 inches) | 90% | moderate |
| April Weather | 3°C (37°F) | 121 mm (4.8 inches) | 87% | high |
| May Weather | 10°C (51°F) | 100 mm (3.9 inches) | 82% | very high |
| June Weather | 15°C (60°F) | 90 mm (3.5 inches) | 77% | very high |
| July Weather | 19°C (66°F) | 89 mm (3.5 inches) | 81% | very high |
| August Weather | 18°C (64°F) | 84 mm (3.3 inches) | 83% | very high |
| September Weather | 13°C (56°F) | 106 mm (4.2 inches) | 85% | high |
| October Weather | 7°C (44°F) | 126 mm (4.9 inches) | 87% | moderate |
| November Weather | -1°C (31°F) | 125 mm (4.9 inches) | 87% | moderate |
| December Weather | -8°C (18°F) | 110 mm (4.3 inches) | 90% | low |