I grew up in Idaho, where there is snow on the ground from October/November to at least February.
We never put special snow tires on our vehicles. We DID put sand bags in the trunk to add weight, and we DID keep snow chains in the trunk as well. Just in case. (We lived at a high altitude, and the snow would often build up too fast for the plows to keep up.)
It also depends on your vehicles. We ALWAYS had 4-wheel drive, and we learned how to drive on the ice, so we were more competent than people from southern states, so snow tires weren't a necessity... I always get a kick out of watching people here in TN try to drive on the rare occasion that it snows. Lol. Of course, it has been so long since I have driven on ice that I'm really not all to confident about it any more...
It also depends on WHERE you will be driving... If you will be in town, the roads are usually plowed, sanded or salted, and don't usually need special tires. If you will be going into the country or on back roads, then it would be so etching to think about.