According to their website the 4th is the final day. There is still plenty of snow but they'd be hemorrhaging money if they stayed open. In the last record snow year they stayed open into Aug. but the days when ski areas would do that just for bragging rights are over. There is always Tioga pass, just pack your skins, crampons, and ice axe. http://list.uvm.edu/cgi-bin/wa?A2=ind0407c&L=skivt-l&D=1&O=A&P=3380
And, Yosemite for hiking of course.