Last updated: June 18, 2025
In September, the average temperature in Sainte-Marie, Canada hovers around 14°C (57°F). Be prepared for variability, as temperatures can dip to a chilling -2°C (28°F) or soar to a balmy 29°C (85°F). Expect about 104 mm (4.1 in) of precipitation spread over 11 days, contributing to an average humidity of 81%.
In September in Sainte-Marie, the average temperature is 14°C (57°F), with maximums reaching 29°C (85°F) and minimums dropping as low as -2°C (28°F). This variation in temperature makes it important for travelers to come prepared for both warm days and chilly nights.
In Sainte-Marie in September, the precipitation amount is 104 mm (4.1 in) over the course of 11 days.
In Sainte-Marie in September, humidity is 81%. With an average temperature of 14°C (57°F), this humidity feels like a warm, dense blanket that clings to your skin, making outdoor exploration a bit heavier and more tiring.
In Sainte-Marie 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 Sainte-Marie.
UV Risk Categories
Weather in Sainte-Marie varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sainte-Marie, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -10°C (14°F) | 90 mm (3.6 inches) | 95% | low |
| February Weather | -9°C (17°F) | 88 mm (3.5 inches) | 93% | moderate |
| March Weather | -4°C (25°F) | 95 mm (3.7 inches) | 90% | moderate |
| April Weather | 3°C (38°F) | 123 mm (4.9 inches) | 87% | high |
| May Weather | 11°C (53°F) | 115 mm (4.5 inches) | 79% | very high |
| June Weather | 16°C (62°F) | 148 mm (5.8 inches) | 73% | very high |
| July Weather | 19°C (67°F) | 144 mm (5.7 inches) | 81% | very high |
| August Weather | 18°C (65°F) | 149 mm (5.9 inches) | 81% | very high |
| September Weather | 14°C (57°F) | 104 mm (4.1 inches) | 81% | high |
| October Weather | 8°C (46°F) | 138 mm (5.4 inches) | 87% | moderate |
| November Weather | -1°C (31°F) | 129 mm (5.1 inches) | 89% | moderate |
| December Weather | -7°C (20°F) | 93 mm (3.6 inches) | 92% | low |