I always judge how good the season started based on how many lifts ski areas opened by Christmas.
Our last really good December was 2010-2011. 13-14 had a pretty good start also, but a pre Christmas thaw. 12-13 had a crappy early December, good Christmas, but then two major January thaws. 14-15 had a good November, but a bad December and a big thaw during Christmas. January and February were very good. I think only one thaw in that time. March was also pretty cold, and Mountain Creek was open into April.
I always put much more emphasis on cold and snowmaking than natural snow, and all the mountains that I frequent, and frequented in the past (except Gore) can open almost everything with zero natural snow. I think the only Whiteface trails without snowmaking are River Run, Empire, and Blazer's Bluff.
I've lived in New York my entire life.