One of the biggest differences between parts of the United States is the weather. If you are moving from a state like Arizona to Massachusetts or New York, you will definitely experience winter in an entirely new way.
Ensure the place where you are moving has good insulation and a quality heating system.
It is also smart to invest in proper winter clothing before the coldest months arrive. Most winter clothing is on sale during the late winter and spring, so you can get some great deals on sweaters, jackets, snow boots and thermal pants.