We're in the SoCal mountains. It is either feast or famine. Been dry for the last several years, but, when we do get a Pacific storm, it is significant.
I kept our slide-in truck camper up here until snow and ice caused a major problem. We would get 2' of wet snow over night. It would try to melt during the day then hard freeze at night. The build up could be in excess of 3'. Then it would start to slide like a glacier. Slide down from the roof over the front cap. Pulling the cap from the roof causing interior leaks. My fix was to not park it at home during the winter. Find a winter storage spot in the valleys, or, just park it in Arizona during the winter.
We have a 5ver now and I can't even get it home. So it stays in Arizona all of the time. Most folks don't have that option.