Weather in Calgary in May 2025
Average weather
Average temperature in Calgary in May
Going from a maximum of +86°F during the day to a minimum of +37°F during the night, the temperature in May averages around +73°F.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +77°F to +77°F.
Is Calgary warm or cold in May?
Calgary is typically mild in May.
Maximum temperatures go up compared to the previous month from +54°F to +63°F. The minimum temperature also goes up from +30°F to +39°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Calgary:
Climate in Calgary in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +54°F | +63°F | +70°F | ||||
| Min. temperature | ||||||
| 0°F | +14°F | +28°F | ||||
| Max. temperature | ||||||
| +82°F | +90°F | +97°F | ||||
| Rainfall | ||||||
| 20 mm | 67 mm | 104 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 56% | 56% | 60% | ||||
| Air pressure | ||||||
| 1011 HPa | 1012 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 2 | 2 | 1 | ||||
| Cloudy days | ||||||
| 12 | 10 | 7 | ||||
| Rainy days | ||||||
| 8 | 15 | 16 | ||||
| Snowy days | ||||||
| 7 | 3 | 0 | ||||
May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +54°F to +63°F during the day. Prepare for more rain. Average rainfall goes from 20 mm to 67 mm. Humidity levels don’t change as the month goes on, averaging around 56%. The average wind speed doesn’t change much during May, staying around 3 m/s. The amount of sunny days stay about the same, averaging 2 sunny days during the month.
June brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Calgary is gradually decreasing during May, going from 4 m/s to 3 m/s over the course of the month.
Rain
Snow
Here’s how May is compared with other months in the amount of snow, total mm:
How was the weather last May in Calgary?
Climate Change Over the Years
The climate in Calgary in May has not changed that much over the last 43 years.
The average temperature was the lowest in 1996 (+47°F) and the highest in 2023 (+56°F). The driest year was 1979 with only 203 mm of rainfall, and the wettest year was 2019 with 702 mm.
FAQ
Is May a good time to visit Calgary?
Can you sunbathe in Calgary in May?
Is Calgary rainy in May?
Is it sunny in Calgary in May?
Other cities in Canada
Monthly weather in Calgary
Source of the data
For this page, we’ve looked at the typical weather in Calgary, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.