Yes. I remember those days in the Frozen North...
I lived in Wisconsin until I was old enough to escape, lol!
When the air is dry enough to cause static electricity, chances are that you will have to provide a shed box and maybe even restrict ventilation, use a bigger water bowl, or even mist (I never actually misted a cornsnake no matter where I lived, though). But a good measurement of your efforts is still whether or not there is any difficulty shedding. I would prefer to keep them on the dry side to avoid mold, fungus, bacterial growth etc, as long as they are shedding well. But then, I am prejudiced by living in the Florida swamps for so long!! Of course, we DO have a/c here, so it is not as humid as you might guess in the snake room.