Mammoth Mountain Closing Day 2024 Tickets. Opening day for the winter 23/24 season is scheduled for november 11, 2023 (subject to change). Chair 16 upgrade storms that drop snow by the foot are what make a once in a lifetime day on.

Chair 16 upgrade storms that drop snow by the foot are what make a once in a lifetime day on. Take some turns and celebrate winter with good times and good friends at mammoth mountain.