Winter’s Coming | Only 85-Days Until Mammoth Mountain, CA Opens on Nov 9th for Winter 19/20 Winter’s coming. 3 months. 12 weeks. 85 days. 2,040 hours. They’re all the same, countdown however you want. They’ll all lead you to November 9th, 2019 when Mammoth Mountain, CA start their lifts turning for winter 2019/20. And they only just finished winter 2018/19. After an epic winter, featuring historic snowfalls, the mountain closed on 28th July 2019. 19 days […] SnowBrains | August 16, 2019 0 Comments