Last updated: June 18, 2025
In Saint-Charles, Canada, the average temperature for December hovers around -5°C (22°F). During this month, temperatures can dip as low as -26°C (-15°F), while occasionally peaking at a milder 14°C (57°F). Expect about 89 mm (3.5 in) of precipitation over 11 days, and prepare for a moist atmosphere with an average humidity of 89%.
In December in Saint-Charles, the average temperature is -5°C (22°F). Maximum temperatures can reach 14°C (57°F), while the minimum can drop as low as -26°C (-15°F). Be prepared for a wide range of temperatures when planning your trip!
In Saint-Charles in December, the precipitation amount is 89 mm (3.5 in) over a span of 11 days.
In Saint-Charles in December humidity is 89%. With an average temperature of -5°C (22°F), this humidity feels like an unexpected chill that seeps into your bones, making travel outside a frosty challenge where each breath forms a small cloud in the air.
In Saint-Charles in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Saint-Charles, you can visit Hourly UV Index in Saint-Charles.
UV Risk Categories
Weather in Saint-Charles varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Saint-Charles, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 83 mm (3.3 inches) | 93% | low |
| February Weather | -7°C (19°F) | 82 mm (3.2 inches) | 92% | moderate |
| March Weather | -2°C (28°F) | 84 mm (3.3 inches) | 86% | moderate |
| April Weather | 6°C (43°F) | 122 mm (4.8 inches) | 85% | high |
| May Weather | 14°C (57°F) | 96 mm (3.8 inches) | 80% | very high |
| June Weather | 19°C (66°F) | 96 mm (3.8 inches) | 74% | very high |
| July Weather | 22°C (72°F) | 91 mm (3.6 inches) | 76% | very high |
| August Weather | 21°C (70°F) | 101 mm (4.0 inches) | 75% | very high |
| September Weather | 16°C (61°F) | 69 mm (2.7 inches) | 78% | high |
| October Weather | 10°C (49°F) | 129 mm (5.1 inches) | 86% | moderate |
| November Weather | 1°C (34°F) | 115 mm (4.5 inches) | 88% | moderate |
| December Weather | -5°C (22°F) | 89 mm (3.5 inches) | 89% | low |