I've only been here 7 years and have noticed a difference. In the first few years I saw snow in October. It was seemingly normal to be basically winter here starting no later than mid-Nov. Like knee deep snow. Last year I almost didn't have a white Christmas (something I really like because I have always lived in hot places and thus mild christmases). It finally snowed like 2 days before though. Looks like it might be the same this year. It's a bummer. Hopefully you'll experience some real VT snow soon!