Last updated: June 18, 2025
The average temperature in Rocky Mountain House, Canada during May hovers around 9°C (49°F). However, temperatures can vary significantly, with a minimum of -7°C (21°F) and a maximum reaching 27°C (81°F). Expect 70 mm (2.8 in) of precipitation spread over 12 days, and keep in mind that the average humidity sits at a notable 82%.
In May in Rocky Mountain House, the average temperature is 9°C (49°F). Maximums can reach 27°C (81°F), and minimums can be as low as -7°C (21°F). Pack a variety of clothing to comfortably enjoy your trip, as temperatures can vary significantly throughout the month.
In Rocky Mountain House in May, the precipitation amount is 70 mm (2.8 in) over the course of 12 days.
In Rocky Mountain House in May, humidity is 82%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and prompting travelers to seek warmth indoors or in cozy cafes.
In Rocky Mountain House in May, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, 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 May’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 |