Yes, Calgary is on the border of the semi-arid koppen climate classification. The southeastern part of the metropolitan area is within that zone. Our biome as classified by the WWF is Temperate Grasslands, Shrublands, and Savannas, subcategory Northern Mixed Grasslands.

This is like… known facts.
Reminding me of the other week when someone on here said Vancouver and eastern Van Island aren't in the koppen Mediterranean climate zone… which of course it is.
As for the southern interior comparison… lmao as if all semi arid climates are identical or something? Calgary receives marginally more precipitation than Kelowna (avgs. 419 mm vs 387 mm), and considerably more sunshine (avgs. 2396 hours vs 1949), and a nearly identical avg humidity (48.3% vs 52.1%)… so it's really not that different except for temperatures. Using Kelowna of course being a typical example of the southern interior as the only population centre of consequence.