If your stay in Maine is expected to be temporary, perhaps shop for some second hand winter clothing. You do get what you pay for with outerwear, imo. Cheap winter jackets from discount stores are not very warm. Check Facebook marketplace, thrift stores, community clothing closet. I would buy underlayers (suggest Under Armor- the skin tight, worn under clothes long johns) gloves, hats, socks, all those items new. Not sure what your long term plan is, but I would not want to spend hundreds of dollars on clothes that I might only need for a short time.