Phoenix perhaps.
Probably why there are so many snowbirds there. Heat is different but humidity is about the same. Both big golf cultures. Both large landlocked cities.
As strange as this may seem to some people though, I think there are far more cities around the world, that are closer to Canadian cities than American cities are.
I spent a lot of time in Melbourne Australia, and it's almost identical to Vancouver. I felt more safe, and more around family in that city, than any city ever in the States. The values are just so much closer. People don't walk around afraid, people aren't packing heat, people aren't railing against global warming and drugs and abortion.
There are a lot of the cities around the world, that have nearer cultures to us than the States.
Actually now that I think about it, Melbourne is great! A lot of the great stuff of Vancouver, without all the nozzle Canuck fans!
Seriously though, and this isn't an knock against the question cause it's an interesting question; there are cities all around the world that feel more like Calgary or Canada, than most, if not all the cities in the States.
This is obviously more common in countries like Britain, Australia, and other ex colonies, but applicable to a few others as well, especially in Europe.
