When Does Mammoth Close 2024. The official opening and closing dates for mammoth mountain, california for current and past seasons. As we previously reported, the resort will close its slopes on august 6th, and despite nearing the end of the current season, they're not holding back on preparations for the next one.

Find current hours of operation for mammoth mountain’s base lodges, retail, dining, and activities. 2024/25 ski season in california ends at 2026/04/12.