Aspen Snowfall Totals & Accumulation Averages
This page pulls together information on when, how much and how often Aspen, Colorado has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Aspen usually gets. There are also monthly and yearly counts of the days that Aspen normally has heavy snowstorms and deep snow accumulated on the ground. Plus there's information on when the ski resort can expect its first and last snowfalls of the season.
All the numbers are averages, based on climate data gathered in Aspen from 1981 to 2010.
How Often it Snows in Aspen
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 Aspen varies from year to year.
In December, for instance, one in four years totals at least 35 inches of snow. Another 25 percent of years receive less than 15.9 inches for the month.
Similarly in January, fresh snowfall in the heaviest years amounts to over 39.3 inches, while the lightest years get less than 17 inches.
New snow for February ranges from over 34.3 inches in heavy snowfall years to under 17.4 inches in light years.
When Aspen Has Its First & Last Snowfalls
The first snowfall of winter for Aspen most often arrives in October. At least one in four years also receive snow in September.
The season's last snowfall typically happens in May, but some years also get a little snow in June.
Aspen is normally free of snow every year during July and August.
How Many Snowstorms Aspen Gets
Most days of snowfall in Aspen leave an inch or more of fresh snow on the ground. For 24 days a year on average, the amount of new snow totals at least three inches.
Snowstorms that drop over five inches in a day normally occur ten times a year. But major blizzards that dump ten inches or more in one day are uncommon events, that arrive just once or twice a year.
How Much Snow Normally Accumulates in Aspen
For close to half the days in a year, Aspen has at least an inch of snow on the ground.
Every year, snow accumulates to ten or more inches deep throughout most of December to early April. Although each spring and fall are different, the snowpack in Aspen can top ten inches anytime from October to May.
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.