Last updated: June 18, 2025
In December, the average temperature in Greenstone, Canada drops to a chilly -12°C (11°F). Expect extremes, with minimums plunging to an icy -39°C (-38°F) and rare maximums reaching up to 7°C (44°F). During this month, precipitation is notable, totaling 55 mm (2.2 in) over approximately 9 days, and average humidity lingers at a high 94%, making for a brisk yet damp experience.
In December in Greenstone, the average temperature is -12°C (11°F). The maximum can reach 7°C (44°F), while the minimum can drop as low as -39°C (-38°F). Travelers should be prepared for extremely cold conditions and pack appropriately for this frigid climate.
In Greenstone in December, the precipitation amount is 55 mm (2.2 in) over a span of 9 days.
In Greenstone in December, humidity is 94%. With an average temperature of -12°C (11°F), this humidity feels like an icy mist clinging to your skin, making every breath sharp and biting, and turning even the shortest walks into a challenge against the extreme chill.
In Greenstone 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 Greenstone.
UV Risk Categories
Weather in Greenstone varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Greenstone, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -15°C (5°F) | 27 mm (1.1 inches) | 95% | low |
| February Weather | -15°C (5°F) | 43 mm (1.7 inches) | 94% | moderate |
| March Weather | -8°C (18°F) | 37 mm (1.4 inches) | 93% | moderate |
| April Weather | -1°C (31°F) | 59 mm (2.3 inches) | 89% | high |
| May Weather | 8°C (47°F) | 59 mm (2.3 inches) | 77% | very high |
| June Weather | 15°C (59°F) | 77 mm (3.0 inches) | 71% | very high |
| July Weather | 18°C (66°F) | 70 mm (2.8 inches) | 67% | very high |
| August Weather | 16°C (62°F) | 70 mm (2.8 inches) | 71% | very high |
| September Weather | 11°C (53°F) | 123 mm (4.8 inches) | 78% | high |
| October Weather | 4°C (40°F) | 84 mm (3.3 inches) | 84% | moderate |
| November Weather | -4°C (24°F) | 64 mm (2.5 inches) | 88% | low |
| December Weather | -12°C (11°F) | 55 mm (2.2 inches) | 94% | low |