Last updated: June 18, 2025
In Windsor, Canada, the average temperature in December hovers around -1°C (30°F). Be prepared for a chilly range, with minimums dipping to -17°C (1°F) and maximums climbing to 15°C (60°F). Expect 108 mm (4.3 in) of precipitation over about 12 days, all while maintaining an average humidity of 83%.
In December in Windsor, the average temperature is -1°C (30°F). Maximum temperatures can reach 15°C (60°F) while minimums can drop as low as -17°C (1°F). Be sure to pack warm clothing to enjoy your trip comfortably!
In Windsor in December, the precipitation amount is 108 mm (4.3 in) over the course of 12 days.
In Windsor in December humidity is 83%. With an average temperature of -1°C (30°F), this humidity feels like a biting chill that seeps through your layers, making outdoor activities uncomfortable and encouraging travelers to seek shelter indoors.
In Windsor 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 Windsor, you can visit Hourly UV Index in Windsor.
UV Risk Categories
Weather in Windsor varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Windsor, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 84 mm (3.3 inches) | 82% | low |
| February Weather | -4°C (26°F) | 105 mm (4.1 inches) | 83% | moderate |
| March Weather | -1°C (31°F) | 90 mm (3.5 inches) | 82% | moderate |
| April Weather | 5°C (42°F) | 105 mm (4.1 inches) | 82% | high |
| May Weather | 10°C (50°F) | 99 mm (3.9 inches) | 82% | very high |
| June Weather | 16°C (61°F) | 99 mm (3.9 inches) | 84% | very high |
| July Weather | 19°C (67°F) | 87 mm (3.4 inches) | 86% | very high |
| August Weather | 20°C (68°F) | 80 mm (3.1 inches) | 85% | very high |
| September Weather | 16°C (61°F) | 95 mm (3.7 inches) | 83% | high |
| October Weather | 10°C (50°F) | 83 mm (3.3 inches) | 83% | moderate |
| November Weather | 4°C (39°F) | 140 mm (5.5 inches) | 85% | moderate |
| December Weather | -1°C (30°F) | 108 mm (4.3 inches) | 83% | low |