Mammoth Mountain has just announced that their 2017 – 2018 ski season will extend to June 17th or later. Mammoth currently has an upper mountain base of 85″, and received a season snowfall total of 481″.
Statement From Mammoth Mountain:
This just in – Mammoth will be open daily for skiing and riding until AT LEAST June 17. With the best spring skiing and riding in the country, it’s the perfect time to get those late season turns in, especially with Tioga Pass opening on Monday, May 21 for even easier access to the Eastside.
— MammothMountain (@MammothMountain) May 18, 2018
Last year, Mammoth was able to stayed open deep into the summer thanks to a historic winter. Hard to say how deep they can go this season, but June 17th is already pretty deep.