Last updated: June 18, 2025
In December, the average temperature in Montmagny, Canada hovers around -7°C (20°F). However, stay prepared for the extremes, as temperatures can plummet to a chilly -26°C (-14°F) or reach a mild 12°C (54°F). Expect 96 mm (3.8 in) of precipitation over 12 days, along with a notably high average humidity of 92%.
In December in Montmagny, the average temperature is -7°C (20°F), with maximums reaching up to 12°C (54°F) and minimums dropping as low as -26°C (-14°F). Travelers should be prepared for a wide range of temperatures and dress accordingly for chilly weather.
In Montmagny in December, the precipitation amount is 96 mm (3.8 in) spread over a duration of 12 days.
In Montmagny in December, humidity is 92%. With an average temperature of -7°C (20°F), this humidity feels like a heavy, icy blanket wrapping around you, making travel uncomfortable as the cold air seems to cling to your skin and create a chilling dampness that seeps into your clothes, leaving you feeling both cold and clammy.
In Montmagny in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Montmagny.
UV Risk Categories
Weather in Montmagny varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Montmagny, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -10°C (14°F) | 92 mm (3.6 inches) | 95% | low |
| February Weather | -9°C (16°F) | 84 mm (3.3 inches) | 93% | moderate |
| March Weather | -4°C (24°F) | 97 mm (3.8 inches) | 90% | moderate |
| April Weather | 2°C (36°F) | 118 mm (4.6 inches) | 87% | high |
| May Weather | 11°C (52°F) | 95 mm (3.8 inches) | 79% | very high |
| June Weather | 16°C (62°F) | 102 mm (4.0 inches) | 73% | very high |
| July Weather | 20°C (68°F) | 79 mm (3.1 inches) | 81% | very high |
| August Weather | 19°C (66°F) | 87 mm (3.4 inches) | 81% | very high |
| September Weather | 14°C (57°F) | 67 mm (2.6 inches) | 81% | high |
| October Weather | 8°C (46°F) | 124 mm (4.9 inches) | 87% | moderate |
| November Weather | -1°C (31°F) | 121 mm (4.8 inches) | 89% | moderate |
| December Weather | -7°C (20°F) | 96 mm (3.8 inches) | 92% | low |