Whistler opens American Thanksgiving weekend, but don't expect much to be open, maybe a third of Whistler and 1/4th of Blackcomb will be open, no terrain parks.
The North Shore hills will open usually two weeks after Whistler but the same thing applies, don't expect a lot of terrain or coverage.
Like illegal said, don't expect much from Vancouver until January or late Dec, it's still ridable but it's not worth a trip.
I'm working on a trip to Steamboat for Dec14-18. I've never been this early in the season. Would I be able to expect decent conditions this early in the season. From what I've read online it does seem Steamboat has a good history of having a good early season.
Not Vancouver or Colorado but a couple other early openings...
- Sunshine Village opens Nov.7-11 and is usually 100% open by Nov.20ish
- Lake Louise opens the same time, but with limited runs and not much snow.
- Mt.Baker is pretty variable and could open anywhere between late October and late December... probably early November though as well.