Northern Climate- Do you cover your RV over the Winter?

I store under cover. Not so much for snow loads in winter (we more often get ice storms) but to avoid hail damage and deterioration from UV radiation. Where you are, these would be summer risks, rather than risks during winter storage.

If you are asking about use of a fabric cover, I don't have experience with that, but think it could provide some protection from sunlight damage, and could make a difference RE water leaks as snow melts.