How is the snow in novmeber when snowmass open?
Welcome to the forum. As with any western resorts, a best case scenario in November would be a few runs of manmade snow. Would be the same for Snowmass. I'm generally in Aspen for Thanksgiving weekend. There's usually a run or two but never a lot more than that. If you're thinking of planning a destination trip in November, I would think twice. Snowmass is hoping to open on Thanksgiving weekend.
Note quite in agreement with T & C on best case scenario. There have been years when the mountain opened early and years when It opened to natural snow over a man-made base.
I would agree that it is not the optimal time for skiing and that limited runs will be open. Most resorts will still be making snow and trying to maintain their base until it gets colder and the big push for skiers in late December.
FWIW, last year Skico reported 27" of snow between Nov 24 and 30 with fresh snow 5 of 7 days. That is NOT a prediction for this year, even though it is snowing right now it will be sunny tomorrow.