Yeah... What he said.
Also to consider is what type of snow you are looking for. Want soft spring snow? Chances are better, the later you go, Want winter snow? Go for earlier.
Before I moved up here, I always took the 2nd week of March as my vacation week. I would almost always have New England, meaning that I had everthing from winter snow to soft corn. And htat would always be in the same week. I was very happy with it.
Another thing to be considered is President's week, and Canadian vacation week. Both are to be avoided or sought, depending on what you are after.
