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 high17°C / 63°F🙂 cool
Nighttime low3°C / 38°F
Feels like (high)14°C / 57°F
Rainfall59 mm / 2.3 in🌦 some rain
Rainy days12 days
Humidity56%🍃 comfortable
Dew point2°C / 35°F
Sunshine11.6 h/day
Daylight15.6 h
Wind17 km/h / 11 mph
Snowfall4 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.

Other months in Calgary

Warmer or cooler than Calgary in May

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