My mountain closes on May 4th, and should be open again sometime around mid October. After they close I'll still have some riding to do but I'll have to earn it. I prefer chairlifts myself. Mid summer I can always go hit St. Mary's (used to be considered a glacier but now just an icy slushy hill).
september/october for me! new indoor area in jersey! last season i started riding actual outdoor areas(haha) november 10th. in 2005 i got a pow day at killington october 25th. hopefully late october/early november and many summer rail jams