Duluth Snowfall Totals & Accumulation Averages
This page pulls together information on when, how much and how often Duluth, Minnesota has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Duluth usually gets. There are also monthly and yearly counts of the days that the city normally has heavy snowstorms and deep snow accumulated on the ground. Plus there's information on when Duluth can expect the first and last snowfalls of the season.
All the numbers are averages, based on climate data gathered from 1981 to 2010 at the Duluth International Airport.
How Often it Snows in Duluth
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 Duluth varies from year to year.
In December, for instance, one in four years totals over 21.4 inches of snow. Another 25 percent of years receive less than 8.5 inches for the month.
Similarly in January, fresh snowfall in the heaviest years amounts to over 31.2 inches, while the lightest years get less than 9.5 inches.
Snow in February ranges from over 15 inches in heavy snowfall years to eight inches or less in light years.
When Duluth Has Its First & Last Snowfalls
Duluth's first snowfall of winter usually arrives in October. About once a decade, September gets a dusting of snow.
The season's last snowfall typically happens in April, although in many years, a light snowfall lands in May.
Duluth is normally free of snow every year from June to August.
How Many Snowstorms Duluth Gets
Most days of snowfall in Duluth leave just a skiff, amounting to less than an inch, of fresh snow on the ground. For 23 days a year on average, the amount of new snow totals at least an inch.
Snowstorms of over five inches a day normally occur four times annually. But major blizzards that dump ten inches or more in one day don't happen every year.
How Much Snow Normally Accumulates in Duluth
For nearly all of winter, along with much of early spring and late fall, Duluth has at least an inch of snow on the ground.
A snowpack that gets to ten or more inches deep can cover the city anytime from November to April. The snow accumulates most during January, February and March. Typically, on 20 days in January and in February plus another 17 days in March, the snow depth in Duluth tops ten inches.
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.