Last updated: June 18, 2025
In May, the average temperature in Cardston, Canada hovers around 10°C (51°F). Expect a range of conditions, with minimum temperatures dipping to -6°C (21°F) and maximums soaring to 28°C (82°F). Be prepared for a fair share of rain, as the region experiences an average precipitation of 72 mm (2.9 in) over 10 days, accompanied by a relatively high humidity of 78%.
In May in Cardston, the average temperature is 10°C (51°F). The maximum can reach 28°C (82°F), while the minimum can be as low as -6°C (21°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In Cardston in May, the total precipitation amount is 72 mm (2.9 in) over a span of 10 days.
In Cardston in May, humidity is 78%. With an average temperature of 10°C (51°F), this humidity feels like a cool, damp mist enveloping you, making travel feel somewhat brisk and invigorating, yet slightly uncomfortable for prolonged outdoor activities.
In Cardston in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Cardston.
UV Risk Categories
Weather in Cardston varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Cardston, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 14 mm (0.5 inches) | 93% | low |
| February Weather | -9°C (17°F) | 39 mm (1.5 inches) | 91% | moderate |
| March Weather | -1°C (31°F) | 31 mm (1.2 inches) | 88% | moderate |
| April Weather | 4°C (39°F) | 53 mm (2.1 inches) | 84% | high |
| May Weather | 10°C (51°F) | 72 mm (2.9 inches) | 78% | very high |
| June Weather | 15°C (59°F) | 59 mm (2.3 inches) | 77% | very high |
| July Weather | 19°C (66°F) | 22 mm (0.9 inches) | 79% | very high |
| August Weather | 18°C (65°F) | 32 mm (1.3 inches) | 69% | very high |
| September Weather | 12°C (55°F) | 35 mm (1.4 inches) | 69% | high |
| October Weather | 5°C (41°F) | 45 mm (1.8 inches) | 78% | moderate |
| November Weather | 0°C (33°F) | 37 mm (1.5 inches) | 87% | moderate |
| December Weather | -4°C (25°F) | 28 mm (1.1 inches) | 94% | low |