Calgary Weather in May
Canada · Humid Continental climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
May in Calgary sees average temperatures ranging from a low of 3.5°C (38.3°F) to a high of 16.3°C (61.3°F), with a mean of 10.0°C (50.0°F). Compared to the annual average of 4.6°C (40.3°F), this month is 5.4°C warmer than the yearly norm. Precipitation averages 65.5mm, making it approximately 25.0mm wetter than the monthly average of 41.0mm. The city receives an average of 11.2 hours of sunshine per day during May, with relative humidity averaging 57.7%. Wind speeds reach an average maximum of 18.8 km/h. Snowfall averages 4.2cm during May, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Calgary, with wetter-than-average conditions compared to the rest of the year.
Calgary's high altitude and continental position create a climate with wide temperature ranges. I've studied the Chinook winds that provide dramatic winter warming, sometimes raising temperatures by 20°C in hours. The best time for visiting is June to August, when the weather is warmest and the nearby Rocky Mountains are accessible for hiking.
May vs Adjacent Months
| Metric | April | May | June |
|---|---|---|---|
| Mean Temp | 3.1°C (37.6°F) | 10.0°C (50.0°F) | 14.6°C (58.3°F) |
| Rainfall | 30.8mm | 65.5mm | 114.8mm |
| Sunshine | 10.4 hrs | 11.2 hrs | 12.2 hrs |
| Humidity | 54.4% | 57.7% | 61.9% |
| Wind | 19.4 km/h | 18.8 km/h | 19.1 km/h |
| Rainy Days | 7.0 | 15.6 | 16.8 |
| Snowfall | 16.0 cm | 4.2 cm | 0.0 cm |
Seasonal Context
May falls in Spring in the Northern Hemisphere. Spring is a transitional season with temperatures rising from winter lows. For travelers visiting Calgary in May, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Calgary in May?
The average temperature in Calgary during May ranges from 3.5°C (38.3°F) to 16.3°C (61.3°F), with a mean of 10.0°C (50.0°F).
How much does it rain in Calgary in May?
Calgary receives an average of 65.5mm of precipitation in May, spread across approximately 15.6 rainy days.
What should I pack for Calgary in May?
Based on May weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is May a good time to visit Calgary?
May is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Calgary
Cities with Similar May Climate (Humid Continental)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 51.05°, -114.07°. Timezone: America/Edmonton. Last updated: 2026-07-30.