Last updated: June 24, 2025
In December, the average temperature in Windsor, United States hovers around -3°C (26°F). Be prepared for a wide temperature range, with minimums dipping as low as -26°C (-14°F) and maximums reaching up to 14°C (58°F). Expect around 98 mm (3.9 in) of precipitation over approximately 10 days, contributing to an average humidity level of 84%. Dress warmly!
In December in Windsor, the average temperature is -3°C (26°F). Maximum temperatures can reach up to 14°C (58°F), while minimums can drop to as low as -26°C (-14°F). Be prepared for a wide temperature range and plan your activities accordingly when traveling during this time.
In Windsor in December, the total precipitation amount is 98 mm (3.9 in) recorded over a span of 10 days.
In Windsor in December, humidity is 84%. With an average temperature of -3°C (26°F), this humidity feels like an icy mist clinging to your skin, making every breath a struggle as the cold seeps in, creating a challenging environment for traveling.
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 | -6°C (21°F) | 72 mm (2.8 inches) | 89% | moderate |
| February Weather | -4°C (24°F) | 83 mm (3.3 inches) | 88% | moderate |
| March Weather | -1°C (31°F) | 71 mm (2.8 inches) | 86% | high |
| April Weather | 6°C (44°F) | 117 mm (4.6 inches) | 84% | very high |
| May Weather | 13°C (56°F) | 84 mm (3.3 inches) | 76% | very high |
| June Weather | 18°C (65°F) | 95 mm (3.8 inches) | 72% | very high |
| July Weather | 21°C (70°F) | 135 mm (5.3 inches) | 66% | very high |
| August Weather | 20°C (68°F) | 93 mm (3.7 inches) | 64% | very high |
| September Weather | 16°C (61°F) | 72 mm (2.8 inches) | 72% | high |
| October Weather | 10°C (50°F) | 141 mm (5.5 inches) | 81% | moderate |
| November Weather | 2°C (35°F) | 100 mm (3.9 inches) | 87% | moderate |
| December Weather | -3°C (26°F) | 98 mm (3.9 inches) | 84% | low |