Last updated: June 18, 2025
In Fort Frances, Canada, the average temperature in December hovers around -10°C (15°F), but don’t be surprised by extremes; lows can plummet to -38°C (-35°F) while highs may reach up to 7°C (45°F). Expect around 43 mm (1.7 in) of precipitation spread over 9 days, and brace yourself for a chilly atmosphere, with an average humidity of 96%.
In December in Fort Frances, the average temperature is -10°C (15°F). Maximums can reach 7°C (45°F), while minimums can plummet to as low as -38°C (-35°F). Travelers should be well-prepared for extreme cold and varying temperatures during this time.
In Fort Frances in December, the precipitation amount reaches 43 mm (1.7 in) over the course of 9 days.
In Fort Frances in December, humidity is 96%. With an average temperature of -10°C (15°F), this humidity feels like a chilling mist that clings to your skin, making every breath crisp and biting, and causing everything around you to feel damp and frosty, which can be quite uncomfortable for traveling.
In Fort Frances in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Fort Frances.
UV Risk Categories
Weather in Fort Frances varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Fort Frances, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -13°C (8°F) | 24 mm (0.9 inches) | 96% | low |
| February Weather | -14°C (8°F) | 27 mm (1.1 inches) | 95% | moderate |
| March Weather | -3°C (26°F) | 26 mm (1.0 inches) | 92% | moderate |
| April Weather | 3°C (38°F) | 49 mm (1.9 inches) | 85% | high |
| May Weather | 12°C (54°F) | 49 mm (1.9 inches) | 75% | very high |
| June Weather | 18°C (65°F) | 84 mm (3.3 inches) | 71% | very high |
| July Weather | 21°C (70°F) | 75 mm (3.0 inches) | 70% | very high |
| August Weather | 19°C (66°F) | 70 mm (2.7 inches) | 72% | very high |
| September Weather | 14°C (57°F) | 138 mm (5.4 inches) | 75% | high |
| October Weather | 6°C (43°F) | 93 mm (3.6 inches) | 82% | moderate |
| November Weather | -3°C (26°F) | 38 mm (1.5 inches) | 90% | low |
| December Weather | -10°C (15°F) | 43 mm (1.7 inches) | 96% | low |