I am the farthest thing from a scientist, but I can't say that I can fully accept the suggestion that winters in our area have become so much warmer now that the likelihood of future snowy winters is past us.
I go on LWX's site and look at temperature records for the past century, expecting to see a hockey stick-like rise recently that bears that out. And all I see are mean winter temps within the same range they have remained all of that time.
Yes, the last 10 winters have been mild. Not as mild overall as 1930-39, or 1995-2004. But beyond the short-term cycles, what about this data leads one to subscribe to the idea that it's become too warm in our area to snow going forward? There is a trendline dotted on the graph after all.