Mammoth Mountain saw 298cm of snow across the 2025/26 season, up 8% on last winter, with 2 more powder days than last year. That puts it 12th snowiest of the last 31 winters.
7
powder daysmornings over 15cm, worth setting an alarm for.
43cm
biggest single daythe mountain reset overnight on 24 Dec 2025.
189cm
deepest snowpackmodelled at mid-mountain height on 20 Feb 2026.
94cm
snowiest monthDecember 2025 stole the show.
93cm
best weekseven days from 21 Dec 2025.
106%
of a typical winter's snowfall. Right about average.
Snow reliability
85/100
ExcellentTypically about 140 ski days a season, declining by 1 days per decade.
Snowfall by season
The 12th snowiest of the last 31 winters.
Snowfall by month
December was an early-season standout, with 32% of the season's snow.
Modelled base-altitude snowfall from ERA5 reanalysis (Copernicus), EM Snow archive. The grid sits near resort base, not the summit, so treat totals as a valley-level estimate.