Weather Information and Packing Advice for Mammoth Mountain, CA

Being aware of the weather, especially when you're planning a ski vacation, is important for a great vacation experience.

 To aid in your awareness, you'll find average temperatures and precipitation levels, summaries, and packing advice below for each season in Mammoth Mountain, California.

Winter

With the opening day of ski season occurring in early November, Mammoth Mountain winters come around quickly, and by the first official day of winter in December, Mammoth Mountain is in full swing of winter activities and climates. However, winter temperatures are not as frigid as they are in other northern or eastern ski cities. Mammoth Mountain has the benefit of a good amount of snow in the mountains and higher winter temperatures. For a winter ski vacation, make sure you pack the appropriate ski gear and attire (layers of polypropylene, fleece or wool, and a waterproof/breathable shell) plus warm winter clothes. 

Average Highs (in degrees Fahrenheit)

• December: 46 degrees
• January: 42 degrees 
• February: 48 degrees
• March: 58 degrees

Average Lows (in degrees Fahrenheit)

• December: 26 degrees
• January: 22 degrees
• February: 27 degrees
• March: 35 degrees

Average Precipitation

• December: 3.17 inches
• January: 2.11 inches
• February: 2.28 inches
• March: 3.82 inches

Spring

Although springtime does bring in much warmer temperatures, skiing does not stop during this season at Mammoth Mountain. Most resorts close around April, but Mammoth has enough snow in the mountains to keep ski season going even into the summer. Therefore, if you're coming to Mammoth in the spring, be prepared by bringing ski attire but also lighter clothes for time off the slopes.

Average Highs (in degrees Fahrenheit)

• March: 58 degrees
• April: 68 degrees
• May: 76 degrees
• June: 85 degrees

Average Lows (in degrees Fahrenheit)

• March: 35 degrees
• April: 44 degrees
• May: 53 degrees
• June: 62 degrees

Average Precipitation

• March: 3.17 inches
• April: 4.31 inches
• May: 4.57 inches
• June: 5.02 inches

Summer

While Mammoth Mountain summers bring highs into the 80s and 90s (in degrees Fahrenheit), sometimes ski season lasts all the way until July. With their highest recorded temperature being 113 degrees in July of 1954, Mammoth Mountain indeed has much warmer summers than other ski cities. If you're traveling to Mammoth Mountain in the summer, you'll find an assortment of summer activities plus skiing and snowboarding in the mountains, depending on that year's ski season and when you visit.

Average Highs (in degrees Fahrenheit)

• June: 85 degrees
• July: 90 degrees
• August: 90 degrees
• September: 81 degrees

Average Lows (in degrees Fahrenheit)

• June: 62 degrees
• July: 67 degrees
• August: 66 degrees
• September: 57 degrees

Average Precipitation

• June: 5.02 inches
• July: 3.56 inches
• August: 3.37 inches
• September: 4.83 inches

Autumn

Though autumn does bring a break from ski season, it also brings the beginning of it in November. Temperatures cool down to more comfortable temperatures as the season progresses, and the amount of precipitation continues to be high. When packing for a vacation to Mammoth Mountain in the autumn, you'll want to bring warm clothes and of course, ski gear and attire if you're going later in the season.

Average Highs (in degrees Fahrenheit)

• September: 81 degrees
• October: 71 degrees
• November: 56 degrees
• December: 46 degrees

Average Lows (in degrees Fahrenheit)

• September: 57 degrees
• October: 46 degrees
• November: 35 degrees
• December: 26 degrees

Average Precipitation

• September: 4.83 inches
• October: 3.47 inches
• November: 4.46 inches
• December: 3.17 inches