Calgary weather in May
May in Calgary: cool, a little rain — a great time to visit.
#5 of 12 months in Calgary · #357 of 604 destinations to visit in May · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Calgary climate normals — May
| Daytime high | 17°C / 63°F | 🙂 cool |
|---|---|---|
| Nighttime low | 3°C / 38°F | |
| Feels like (high) | 14°C / 57°F | |
| Rainfall | 59 mm / 2.3 in | 🌦 some rain |
| Rainy days | 12 days | |
| Humidity | 56% | 🍃 comfortable |
| Dew point | 2°C / 35°F | |
| Sunshine | 11.6 h/day | |
| Daylight | 15.6 h | |
| Wind | 17 km/h / 11 mph | |
| Snowfall | 4 cm / 1.6 in | |
| Air quality (US AQI) | 54 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Calgary in May — FAQ
- Is May a good time to visit Calgary?
- May in Calgary: cool, a little rain — a great time to visit. It ranks #5 of 12 months for Calgary on SeasonMap's comfort score (79/100).
- What is the weather like in Calgary in May?
- In May, Calgary averages a daily high of 17.1°C and a low of 3.4°C, with about 58.5 mm of rain over roughly 11.6 rainy days.
- What is the air quality in Calgary in May?
- Calgary has a mean US Air Quality Index of about 54 in May.
- Does it snow in Calgary in May?
- Calgary sees roughly 4 cm of snowfall in May.