As someone that came from a hot climate then lived in a cold place for a while, double, triple, quadruple the socks. They get wet, even if you’re wearing boots, so would your shoes. Scarfs do wonders in keeping you warm and from getting sick and don’t jump straight out of a warm building, sit by the window or the door for a bit to cool so you don’t get dizzy and have short of breath from the sudden cold.