Just browsing a couple charts here, and found something unexpected. For Calgary, these are number of days below -20 and over 30. Click the 10x to see maximum range for each. What I find interesting is that our climate has gotten more moderate, not more extreme, as we are constantly told. Fewer cold days, and fewer hot days. Going to check out a few more cities, as this is obviously unexpected.
https://calgary.weatherstats.ca/char...20-yearly.html
https://calgary.weatherstats.ca/char...30-yearly.html