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 1991 to 2020 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).

Average total snowfall and days with fresh snow in Jackson
Days   Inches Centi­metres
10.8 January 19.1 48.5
9.1 February 15.6 39.6
5.5 March 9.2 23.4
2.4 April 4.2 10.7
0.4 May 0.6 1.5
0.1 September 0.1 0.3
1.7 October 2.0 5.1
5.4 November 11.0 27.9
11.4 December 16.4 41.7
46.8 Year 78.2 198.6

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 16.2 inches of snow. Another 25 percent of years receive less than 11.2 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 8.3 inches.

New snow for February ranges from at least 19.6 inches in heavy snowfall years to 6.2 inches or less in light years.

When Jackson Has Its First & Last Snowfalls

The first snowfall of winter for Jackson usually arrives in October or November. Although rare, it can start snowing here in September.

The season's last snowfall most often happens in April, but in some years new snow lands as late as May.

The mountain resort town is normally free of snow every year from June to August.

How Many Snowstorms Jackson Gets

Most days of snowfall in Jackson leave at least an inch of fresh snow on the ground. For nine 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 or four times annually. But major blizzards that dump ten inches or more in one day are uncommon events that don't appear every year at Jackson Hole.

Number of days per month and year on average in Jackson with a total snowfall of at least 1, 3, 5 or 10 inches
1 inch
2.5 cm
3 inches
7.6 cm
  5 inches
12.7 cm
10 inches
25.4 cm
6.4 2.1 January 1.1 0.1
5.9 2.0 February 0.7 0.2
3.1 1.0 March 0.4 0.0
1.3 0.3 April 0.1 0.0
0.2 0.0 May 0.0 0.0
0.9 0.2 October 0.1 0.0
3.0 1.2 November 0.5 0.0
6.9 1.9 December 0.7 0.1
27.7 8.7 Year 3.6 0.4
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Wyoming Snowfall
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