Last updated: June 18, 2025
In Deep River, Canada, the average temperature in December hovers around -7°C (20°F), with extremes ranging from a chilling -32°C (-25°F) to a milder 15°C (59°F). Expect 76 mm (3.0 in) of precipitation spread over 12 days, creating a notably damp atmosphere with an average humidity of 91%.
In December in Deep River, the average temperature is -7°C (20°F). Maximums can reach 15°C (59°F), while minimums can drop as low as -32°C (-25°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack appropriately for both warm and frigid conditions.
In Deep River in December, the total precipitation amount is 76 mm (3.0 in), occurring over the course of 12 days.
In Deep River in December humidity is 91%. With an average temperature of -7°C (20°F), this humidity feels like an icy embrace that clings to your skin, making travel uncomfortable and challenging as every breath feels damp and heavy in the frigid air.
In Deep River 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 Deep River, you can visit Hourly UV Index in Deep River.
UV Risk Categories
Weather in Deep River varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Deep River, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -10°C (14°F) | 61 mm (2.4 inches) | 93% | low |
| February Weather | -9°C (16°F) | 72 mm (2.8 inches) | 94% | moderate |
| March Weather | -4°C (25°F) | 68 mm (2.7 inches) | 87% | moderate |
| April Weather | 4°C (39°F) | 105 mm (4.1 inches) | 82% | high |
| May Weather | 12°C (54°F) | 107 mm (4.2 inches) | 74% | very high |
| June Weather | 17°C (64°F) | 102 mm (4.0 inches) | 68% | very high |
| July Weather | 21°C (70°F) | 102 mm (4.0 inches) | 67% | very high |
| August Weather | 19°C (66°F) | 108 mm (4.3 inches) | 67% | very high |
| September Weather | 14°C (58°F) | 94 mm (3.7 inches) | 74% | high |
| October Weather | 8°C (47°F) | 104 mm (4.1 inches) | 83% | moderate |
| November Weather | -1°C (31°F) | 82 mm (3.2 inches) | 89% | moderate |
| December Weather | -7°C (20°F) | 76 mm (3.0 inches) | 91% | low |