Last updated: June 18, 2025
In December, the average temperature in East Gwillimbury, Canada hovers around -2°C (28°F). However, temperatures can dip as low as -28°C (-18°F) or rise to a mild 16°C (62°F). Expect an average of 67 mm (2.6 in) of precipitation over 13 days, with a notably high average humidity of 87%.
In December in East Gwillimbury, the average temperature is -2°C (28°F), with maximums reaching up to 16°C (62°F) and minimums dipping as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable while exploring the area.
In East Gwillimbury in December, the precipitation amount is 67 mm (2.6 in) spread over 13 days.
In East Gwillimbury in December, humidity is 87%. With an average temperature of -2°C (28°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and requiring extra layers to stay warm and comfortable while traveling.
In East Gwillimbury 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 East Gwillimbury, you can visit Hourly UV Index in East Gwillimbury.
UV Risk Categories
Weather in East Gwillimbury varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in East Gwillimbury, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (22°F) | 60 mm (2.4 inches) | 91% | low |
| February Weather | -5°C (23°F) | 61 mm (2.4 inches) | 91% | moderate |
| March Weather | 0°C (32°F) | 60 mm (2.4 inches) | 88% | moderate |
| April Weather | 6°C (42°F) | 103 mm (4.1 inches) | 88% | very high |
| May Weather | 13°C (56°F) | 99 mm (3.9 inches) | 82% | very high |
| June Weather | 19°C (66°F) | 94 mm (3.7 inches) | 79% | very high |
| July Weather | 22°C (72°F) | 98 mm (3.9 inches) | 77% | very high |
| August Weather | 21°C (69°F) | 97 mm (3.8 inches) | 72% | very high |
| September Weather | 16°C (62°F) | 64 mm (2.5 inches) | 76% | high |
| October Weather | 10°C (50°F) | 100 mm (3.9 inches) | 83% | moderate |
| November Weather | 2°C (36°F) | 74 mm (2.9 inches) | 88% | moderate |
| December Weather | -2°C (28°F) | 67 mm (2.6 inches) | 87% | low |