how cold (outside temp) do you go with s/c?

Ok, this has me wondering how GM and others put superchargers on their main stream cars (Pontiac GXP, Bonneville, even a Buick has a 3800SC). I’m sure most of those drivers, especially the Buick ones, don’t have the slightest clue how a supercharger works, and certainly wouldn’t take extra care when it’s cold out. And being a main stream vehicle it’s expected to work when it’s -20 outside.