Last updated: June 18, 2025
In December, the average temperature in Rocky Mountain House, Canada is -7°C (19°F). While temperatures can plunge to a chilling -40°C (-39°F), they can occasionally rise to a mild 12°C (54°F). During this time, expect approximately 28 mm (1.1 in) of precipitation over 8 days, accompanied by a high average humidity of 93%. Stay warm and prepared!
In December in Rocky Mountain House, the average temperature is -7°C (19°F). The maximum can reach 12°C (54°F), while the minimum can plummet to as low as -40°C (-39°F). Travelers should be prepared for extreme cold conditions, making appropriate clothing essential for enjoying the winter scenery.
In Rocky Mountain House in December, the total precipitation amount is 28 mm (1.1 in) spread over 8 days.
In Rocky Mountain House in December humidity is 93%. With an average temperature of -7°C (19°F), this humidity feels like an icy grip on the lungs, making travel challenging as each breath draws in the cold, damp air and clings uncomfortably to the skin.
In Rocky Mountain House 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 Rocky Mountain House.
UV Risk Categories
Weather in Rocky Mountain House varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Rocky Mountain House, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (18°F) | 12 mm (0.5 inches) | 92% | low |
| February Weather | -11°C (13°F) | 26 mm (1.0 inches) | 93% | moderate |
| March Weather | -4°C (25°F) | 33 mm (1.3 inches) | 89% | moderate |
| April Weather | 2°C (35°F) | 47 mm (1.8 inches) | 85% | high |
| May Weather | 9°C (49°F) | 70 mm (2.8 inches) | 82% | high |
| June Weather | 14°C (57°F) | 108 mm (4.3 inches) | 82% | very high |
| July Weather | 16°C (60°F) | 112 mm (4.4 inches) | 84% | very high |
| August Weather | 15°C (59°F) | 72 mm (2.8 inches) | 82% | very high |
| September Weather | 10°C (49°F) | 71 mm (2.8 inches) | 78% | high |
| October Weather | 3°C (37°F) | 37 mm (1.4 inches) | 84% | moderate |
| November Weather | -3°C (28°F) | 37 mm (1.4 inches) | 89% | low |
| December Weather | -7°C (19°F) | 28 mm (1.1 inches) | 93% | low |