Mammoth Mountain Snow Conditions Overview
Mammoth Mountain in California, USA sits at 3,369m (11,054ft) elevation and averages 695cm of annual snowfall based on 10 years of historical data (2015-2025). During the ski season, Mammoth Mountain receives approximately 657cm of snow. The best month for powder is March, averaging 147cm of snowfall with a 52% powder probability. The highest chance of fresh powder (15cm+ in any given week) occurs in March and January at 52%.
- Annual Snowfall
- 695cm
- Elevation
- 3,369m
- Best Month
- March
- Powder Probability
- 52%
Snowfall data sourced from ERA5 reanalysis via Open-Meteo Historical Weather API (2015-2025).
Check Mammoth Mountain snow forecast for your dates
Based on 10 years of historical snowfall data
About Mammoth Mountain
Mammoth Mountain snowfall statistics based on 10 years of historical data. See average annual snowfall, best months to ski, and powder probability to help you plan your trip.
Snow & Weather Conditions
We use 10 years of historical data to help you plan — not a live snow report.
Sierra Nevada storms deliver heavy, moisture-rich "Sierra cement" snowfall. When cold fronts align, the result is deep dumps that can exceed a metre in a single storm cycle. The high elevation ensures a cold, consistent climate that favours natural snow preservation. Storms frequently deliver generous totals, and the altitude keeps the snowpack dense and skiable throughout the core winter months. Most winters deliver 6-10 metres of cumulative snow, compressing into a 2-metre-plus base by the middle of the season.
Best Time to Ski
The best time to ski at Mammoth Mountain is March and January, with 147cm average snowfall and 52% powder probability. Based on 10 years of historical snowfall data from PowderDays. The season stretches from late November to April, though Mammoth Mountain often stays open into June or even July. PowderDays' historical tool lets you compare precipitation patterns and find the best travel windows.
Powder Probability by Month
Chance of 15cm+ fresh snow in any given week (10 years of data):
- Nov32%
- Dec39%
- Jan47%
- Feb43%
- Mar52%
- Apr23%
10-Year Snow History
| Month | Avg Snowfall (cm) | Record High | Record Low | Powder Probability |
|---|---|---|---|---|
| Nov | 61.8 | 115.2 | 12.3 | 32% |
| Dec | 119.5 | 365.5 | 8.3 | 39% |
| Jan | 146.5 | 510.7 | 1.4 | 47% |
| Feb | 136.8 | 376.0 | 5.5 | 43% |
| Mar | 147.0 | 385.8 | 24.6 | 52% |
| Apr | 45.7 | 137.1 | 13.2 | 23% |
What Makes It Special
Diverse terrain from gentle groomers to gnarly cliffs and wind-loaded chutes, plus some of North America's best terrain parks. California ski culture combines outdoor athleticism with West Coast style — expect craft coffee, farm-to-table dining, and stunning Lake Tahoe views.
The Sierra Nevada holds the North American record for the most snowfall in a single season: 28.5 metres (1,140 inches), recorded at Mount Shasta Ski Bowl during the winter of 1955-56. The range's "atmospheric river" storms routinely deliver over a metre of snow in a single event.
Data Sources & Methodology
All snowfall statistics for Mammoth Mountain are based on 10 years of historical data (2015-2025) from the Open-Meteo Historical Weather API, which provides ERA5 reanalysis data from the European Centre for Medium-Range Weather Forecasts (ECMWF). Daily snowfall totals are queried at Mammoth Mountain's coordinates (37.63, -119.03) and 3,369m elevation, then aggregated into monthly averages, record highs/lows, and powder probability scores. Powder probability represents the chance of receiving 15cm or more of fresh snow in any given week during that month.