OK, it's a matter of perspective.
Actually, most winters in my part of the state get down to -20 at least once. What I was thinking about was that it is dry.
When I was in a rainy part of Panama, I had a few episodes of trying to fix old AC units and space heaters. I was astounded by the number of things that seemed to spontaneously rust tight or rust away and induce other failures as a result. I came away concluding that the Wyoming climate is really nice to machines.