No real difference on the Snow Day front for me, our policy has always been to make snow days WFH days. Many people did still manage to get weather days off this week in Texas this week though, tough to work if you don't have power. I've been WFH for almost 7 years now, so I'm used to it (and am doing it because I love it).
Winter is both the best and the worst time to WFH. Best because I can just stay inside for days at a time and ignore the weather, worst because I will stay inside for days at a time, huddled with a pot of tea and a SAD light. Back in the Before Times, I used to do a nice long half-work/half-vacation trip somewhere warm in the winter. If you subtract 3 weeks from the middle of winter and make it tropical, winter is perfectly reasonable.