Jackson Snowfall Totals & Snowstorm Averages
This page pulls together information on when, how much and how often Jackson, Wyoming has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Jackson 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 Jackson Hole can expect the first and last snowfalls of the season.
All the numbers are long-term historical averages based on weather data gathered from 1981 to 2010 in Jackson.
How Often it Snows in Jackson
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 Jackson varies from year to year.
In December, for instance, one in four years totals over 26.2 inches of snow. Another 25 percent of years receive less than 12.6 inches for the month.
Similarly in January, fresh snowfall in the heaviest years amounts to 28 inches or more, while the lightest years get less than 7.2 inches.
New snow for February ranges from at least 17 inches in heavy snowfall years to five inches or less in light years.
When Jackson Has Its First & Last Snowfalls
The first snowfall of winter for Jackson usually arrives in November. Once every three or four years it starts snowing in October.
The season's last snowfall most often happens in April. But in some years it stops snowing as early as March, while in others new snow lands as late as May.
The mountain resort town is normally free of snow every year from June to September.
How Many Snowstorms Jackson Gets
Most days of snowfall in Jackson leave at least an inch of fresh snow on the ground. For seven days a year on average, the amount of new snow totals three inches or more.
Snowstorms of over five inches a day normally occur three times annually. But major blizzards that dump ten inches or more in one day are uncommon events that don't appear every year in Jackson Hole.
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.