Last updated: June 18, 2025
The average temperature in Renfrew, Canada during December hovers around -6°C (22°F). Temperatures can dramatically fluctuate, with minimums plummeting to -30°C (-22°F) and maximums reaching up to 15°C (59°F). Expect 73 mm (2.9 in) of precipitation spread over 12 days, creating a rather humid atmosphere, as indicated by an average humidity of 89%.
In December in Renfrew, the average temperature is -6°C (22°F). The maximum can reach 15°C (59°F), while the minimum can drop as low as -30°C (-22°F). Be sure to pack warm clothing and be prepared for fluctuating temperatures if you plan to travel during this time.
In Renfrew in December, the precipitation amount is 73 mm (2.9 in) occurring over a span of 12 days.
In Renfrew in December, humidity is 89%. With an average temperature of -6°C (22°F), this humidity feels like an icy blanket clinging to your skin, making travel uncomfortable and the air feel even colder, as if every breath is laced with frost.
In Renfrew 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 Renfrew, you can visit Hourly UV Index in Renfrew.
UV Risk Categories
Weather in Renfrew varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Renfrew, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 68 mm (2.7 inches) | 93% | low |
| February Weather | -8°C (18°F) | 70 mm (2.8 inches) | 93% | moderate |
| March Weather | -3°C (27°F) | 74 mm (2.9 inches) | 86% | moderate |
| April Weather | 5°C (41°F) | 109 mm (4.3 inches) | 82% | very high |
| May Weather | 12°C (55°F) | 111 mm (4.4 inches) | 75% | very high |
| June Weather | 18°C (64°F) | 92 mm (3.6 inches) | 68% | very high |
| July Weather | 21°C (70°F) | 99 mm (3.9 inches) | 69% | very high |
| August Weather | 19°C (67°F) | 110 mm (4.3 inches) | 67% | very high |
| September Weather | 15°C (59°F) | 66 mm (2.6 inches) | 72% | high |
| October Weather | 8°C (48°F) | 110 mm (4.3 inches) | 83% | moderate |
| November Weather | 0°C (32°F) | 82 mm (3.2 inches) | 88% | moderate |
| December Weather | -6°C (22°F) | 73 mm (2.9 inches) | 89% | low |