Last updated: June 18, 2025
In December, the average temperature in Clarence-Rockland, Canada hovers around -5°C (22°F). Expect chilly extremes, with minimums plummeting to -29°C (-20°F) and maximums reaching a modest 14°C (58°F). During this month, precipitation totals 84 mm (3.3 in) spread over 11 days, accompanied by a high average humidity of 89%. Prepare for a cold, damp atmosphere!
In December in Clarence-Rockland, the average temperature is -5°C (22°F), with maximums reaching 14°C (58°F) and minimums dropping as low as -29°C (-20°F). Travelers should be prepared for a wide range of temperatures and dress warmly for their visit.
In Clarence-Rockland, in December, the precipitation amount is 84 mm (3.3 in) during a period of 11 days.
In Clarence-Rockland in December humidity is 89%. With an average temperature of -5°C (22°F), this humidity feels like an unexpected chill that seeps into your bones, making travel outside a frosty challenge where each breath forms a small cloud in the air.
In Clarence-Rockland 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 Clarence-Rockland, you can visit Hourly UV Index in Clarence-Rockland.
UV Risk Categories
Weather in Clarence-Rockland varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Clarence-Rockland, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (17°F) | 79 mm (3.1 inches) | 93% | low |
| February Weather | -7°C (19°F) | 82 mm (3.2 inches) | 93% | moderate |
| March Weather | -2°C (28°F) | 88 mm (3.4 inches) | 86% | moderate |
| April Weather | 6°C (42°F) | 115 mm (4.5 inches) | 82% | very high |
| May Weather | 13°C (56°F) | 117 mm (4.6 inches) | 75% | very high |
| June Weather | 18°C (65°F) | 99 mm (3.9 inches) | 68% | very high |
| July Weather | 22°C (71°F) | 120 mm (4.7 inches) | 69% | very high |
| August Weather | 20°C (68°F) | 90 mm (3.5 inches) | 67% | very high |
| September Weather | 16°C (60°F) | 77 mm (3.0 inches) | 72% | high |
| October Weather | 9°C (49°F) | 128 mm (5.0 inches) | 83% | moderate |
| November Weather | 1°C (33°F) | 99 mm (3.9 inches) | 88% | moderate |
| December Weather | -5°C (22°F) | 84 mm (3.3 inches) | 89% | low |