Last updated: June 18, 2025
In December, the average temperature in Cowansville, Canada hovers around -5°C (24°F). Expect chilly conditions with minimum temperatures dropping to -27°C (-16°F), while a rare warm spell can reach up to 16°C (60°F). Precipitation can be significant, with around 87 mm (3.4 in) falling over 14 days, contributing to an overall average humidity of 89%. Stay prepared for a cold and damp month!
In December in Cowansville, the average temperature is -5°C (24°F). Maximum temperatures can reach 16°C (60°F), while minimums can plummet to as low as -27°C (-16°F). Be prepared for a wide range of temperatures when traveling during this time, so pack accordingly.
In Cowansville in December, the precipitation amount is 87 mm (3.4 in) over a span of 14 days.
In Cowansville in December humidity is 89%. With an average temperature of -5°C (24°F), this humidity feels like an uncomfortable chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay warm while battling the dampness in the air.
In Cowansville 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 Cowansville, you can visit Hourly UV Index in Cowansville.
UV Risk Categories
Weather in Cowansville varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Cowansville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 94 mm (3.7 inches) | 93% | low |
| February Weather | -6°C (21°F) | 88 mm (3.5 inches) | 92% | moderate |
| March Weather | -2°C (29°F) | 91 mm (3.6 inches) | 86% | moderate |
| April Weather | 6°C (43°F) | 119 mm (4.7 inches) | 85% | high |
| May Weather | 13°C (56°F) | 106 mm (4.2 inches) | 80% | very high |
| June Weather | 18°C (65°F) | 117 mm (4.6 inches) | 74% | very high |
| July Weather | 21°C (70°F) | 118 mm (4.7 inches) | 76% | very high |
| August Weather | 20°C (68°F) | 117 mm (4.6 inches) | 75% | very high |
| September Weather | 16°C (60°F) | 77 mm (3.0 inches) | 78% | high |
| October Weather | 10°C (49°F) | 148 mm (5.8 inches) | 86% | moderate |
| November Weather | 1°C (34°F) | 128 mm (5.0 inches) | 88% | moderate |
| December Weather | -5°C (24°F) | 87 mm (3.4 inches) | 89% | low |