Mammoth Mountain, CA, Delays Opening Day Again Amid Incoming Storm

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What was initially set to be a one-day delay now may stretch further as Mammoth Mountain has announced it will not open for skiing and riding this Saturday, November 15. The resort cited changes in the storm cycle and cold, snowy conditions ahead, saying that it will stand by until conditions are safe and optimal.

In a social-media statement posted Thursday, the resort explained:

“Due to changes in the current storm cycle, we will no longer be opening for skiing and riding this Saturday, November 15. Colder temperatures and snowfall are in the forecast in the coming days. We will be assessing conditions daily and our teams are committed to opening as soon as conditions allow. We will provide 24-hour notice once Mother Nature gives us the green light. Stay tuned.”

Originally, Mammoth Mountain had moved its official opening from Friday, November 14 to Saturday, November 15 to allow operations staff extra time and to take advantage of an incoming system. At the time, the resort stated the delay would “give Mother Nature and our ops team the time they need to get the mountain dialed in for some amazing first turns.”

That update noted that the storm was forecast to bring “several inches of natural snow across the Eastern Sierra,” boosting snowmaking efforts and possibly allowing wider terrain to open at kickoff.

What’s Next

• The resort is monitoring conditions closely and promises to issue a 24-hour advance notice once it’s ready to open.

• A full operational plan—listing lifts, runs, amenities, and events—will be released when opening is locked in.

• This season’s kickoff has been postponed for both guest safety and to ensure better terrain coverage once the mountain opens.

Mammoth Mountain, widely known for some of the longest seasons in the U.S., often opens in mid-November and can run into July. The opening day delay reminds us how variable early-season conditions can be—even for major resorts.

Stay updated at mammothmountain.com and keep an eye on the resort’s live social-media feeds and mountain report for the latest.