Alta Snowfall Totals & Accumulation Averages
This page pulls together information on when, how much and how often Alta, Utah has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Alta usually gets. There are also monthly and yearly counts of the days that the ski resort normally has heavy snowstorms. Plus there's information on when Alta can expect the first and last snowfalls of the season.
All the numbers are averages, based on weather data gathered from 1981 to 2010 in Alta at an elevation of 8,730 feet (2,661 metres).
How Often it Snows in Alta
This first table lists monthly and yearly totals for amount of snow and how many days it snows at least 0.1 inches (0.25 centimetres).
These averages don't show how much the snowfall in Alta varies from year to year.
In December, for instance, one in four years totals 130 or more inches (ten feet, ten inches) of snow. Another 25 percent of years receive under half that — 62 inches (five feet, two inches) or less for the month.
Similarly in January, fresh snowfall in the heaviest years amounts to over 92.3 inches, while the lightest years get 44 inches or less.
New snow for February ranges from over 85 inches in heavy snowfall years to 63 inches at most in light years.
When Alta Has Its First & Last Snowfalls
The first snowfall of autumn for Alta usually arrives in October, although every few years September gets some snow.
The season's last snowfall typically happens in June. About once every four years June has no new snow, which moves the last snowfall into May.
Alta normally gets no new snow during July and August.
How Many Snowstorms Alta Gets
Most days of snowfall at Alta result in at least an inch of fresh snow left on the ground. For 61 days a year on average, the amount of new snow totals three inches or more.
Snowstorms of over five inches a day normally occur 42 times annually at the ski area. Typically 18 of these storms are major blizzards that dump ten inches or more in one day. Snow events this severe can descend on Alta anytime except in July and August.
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.