The earliest I have skiied was November 17 at Killington. Upper half of 5 trails was open.
It was strange to have to ride the chair up from the mid station to the top, get off, then get back on to come down, with skis in hand.
You gotta wait and pray until at least the week before your planned weekend. I have had plans dashed by a few warm, snow melting days prior to my trip.