Sioux Falls Snowfall Totals & Accumulation Averages
This page pulls together information on when, how much and how often Sioux Falls, South Dakota has snow.
There are data and descriptions here of how many days it snows and the total amount of snowfall that Sioux Falls 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 Sioux Falls can expect the first and last snowfalls of the season.
The first set of monthly snow totals are averages for 2010 to 2019. All the other numbers are long-term historical averages based on weather data gathered from 1991 to 2020 at the Sioux Falls Regional Airport.
How Often it Snows in Sioux Falls
The next two tables list 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 Sioux Falls varies from year to year.
In December, for instance, one in four years totals over 12.5 inches of snow. Another 25 percent of years receive 3.2 inches or less for the month.
Similarly in January, fresh snowfall in the heaviest years amounts to over 9.9 inches, while the lightest years get less than 4.9 inches.
New snow for February ranges from over 13 inches in heavy snowfall years to under 4.3 inches in light years.
When Sioux Falls Has Its First & Last Snowfalls
The first snowfall of winter for Sioux Falls usually arrives in November. Less commonly, snow starts falling in October.
The season's last snowfall typically happens in April, although a occasionally April sees no new snow.
Sioux Falls is normally free of snow every year from May to September.
How Many Snowstorms Sioux Falls Gets
Most days of snowfall in Sioux Falls leave just a skiff, amounting to less than an inch, of fresh snow on the ground. For 12 days a year on average, the amount of new snow totals at least an inch.
Snowstorms of over five inches a day normally occur a couple times a year. Major blizzards that dump ten inches or more in one day are rare events that arrive about twice a decade.
How Much Snow Normally Accumulates in Sioux Falls
For over half of winter days, Sioux Falls has at least an inch of snow on the ground.
Typically, on nine days a year, between November and April, the snow covering Sioux Falls builds up to ten or more inches deep.
Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.
NOAA National Centers for Environmental Information (NCEI). Climate Normals.