i am not sure how you are trying to derive an answer from that. The answer is really going to vary and the only way to tell is by talking to the owner. If the owner never takes his/her car out of during storms/bad days then the question does not provide any good answers. Also, what if the guy went up to NY and PA many times and they have had worse winters than we did, how would you be able to figure that out from our winter.
What color is the car? I would suggest when you do a PPI, also have a detailer look and give you an evaluation as well as many/many detailed pix as you are looking to buy a car out of your area.