Does it need to be that much stronger for wind in winter than in summer? Worst case might be heavy snow followed by freezing rain, but in the situation described a with a good waterproof 3 season tent you should be able to go outside now and then and clear the snow and ice. Good clothing is most important. Mind you, some of the better 3 season rainproof tents might be very wet in cold wet winter conditions, and some of those 3.5 and 4 season tents might be pretty good all year round maybe, and not that expensive. I think for 4 season you have to seperate between deep woods vs arctic/alpine. Of course there are always ice-storms and such where you might want to get into the open away from trees and such. I'm more of a clothing and bivy and tarp guy myself. I will use a tent but not depend too much on it.

p.s. sorry I keep editing