camping

Most of your warmth should come from a more insulated sleeping bag and pad. And/or doubling them up. Assume the tent is mostly just a wind break unless you're going down the hot tent route with a stove or heater.

There are winter tents with less mesh (to keep blown snow out) and stronger flies and poles for snow and wind, but 3 season tents can do a lot if you don't want to camp in a blizzard (I don't).