Climate of Calgary

Average temperatures in Springbank Airport (slightly west of Calgary) range from 15.3 °C (59.5 °F) in July to −8.4 °C (16.9 °F) in January.

These temperatures are frequently broken up by warm, dry chinook winds that blow into Alberta over the mountains.

[7] In the summer, daytime temperatures range from 10 to 25 °C (50 to 77 °F) and exceed 30 °C (86 °F) for an average of 5.1 days in June, July, and August, and occasionally as late as September or as early as May.

As a consequence of Calgary's high elevation and aridity, summer days are often not humid, unlike many other major cities in Canada.

[9] The relatively low amount of precipitation in Calgary, when compared to other cities like Toronto, Vancouver, and Montreal, also gives Calgary a climate close to a cool semi-arid climate (Koppen: BSk, Trewartha: BSlo bordering Bsbo).

A hailstorm that struck Calgary on September 7, 1991, was one of the most destructive natural disasters in Canadian history, with over $400 million in damage.