While a quick google search would probably answer your question, I have never found any long-range predictions to be very accurate. The only thing I really pay attention to is oceanic water temperatures for el nino predictions. Even then it can fade, and I have seen it do so.
So all that being said, Kirkwood, Squaw, Heavenly all opened pretty early. I was at Kirkwood last weekend and while it was pretty warm, their coverage was fair considering everything. It was also puking pretty good on Sunday, though really slushy on Saturday.