Sioux Falls Snowfall Totals & Accumulation Averages

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).

10-year snowfall averages at Sioux Falls, 2010 to 2019

Days		Inches	Centi­metres
2.0	January	7.8	19.9
3.6	February	11.1	28.1
1.3	March	4.8	12.2
1.4	April	5.9	14.9
0.2	May	0.4	0.9
0.2	October	0.5	1.3
1.0	November	5.0	12.6
3.2	December	10.3	26.2
12.9	Year	45.8	116.3

30-year snowfall averages at Sioux Falls, 1991 to 2020

Days		Inches	Centi­metres
7.3	January	8.0	20.3
6.8	February	8.6	21.8
5.1	March	7.2	18.3
2.2	April	5.1	13.0
0.1	May	0.1	0.3
0.9	October	1.4	3.6
3.5	November	6.2	15.7
6.9	December	8.7	22.1
32.8	Year	45.3	115.1

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.

Number of days per month and year on average in Sioux Falls 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
2.0	0.9	January	0.3	0.0
2.5	1.0	February	0.2	0.0
1.9	0.7	March	0.3	0.0
1.3	0.6	April	0.3	0.1
0.1	0.0	May	0.0	0.0
0.6	0.1	October	0.0	0.0
1.4	0.8	November	0.4	0.1
2.7	0.8	December	0.3	0.0
12.5	4.9	Year	1.8	0.2

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.

Average total days per month and year in Sioux Falls with snow depth of at least 1, 3, 5 or 10 inches on the ground

1 inch 2.5 cm	3 inches 7.6 cm		5 inches 12.7 cm	10 inches 25.4 cm
22.3	15.2	January	10.0	2.6
15.9	10.9	February	7.9	3.7
10.1	6.1	March	3.6	0.9
2.3	1.2	April	0.5	0.1
0.1	0.0	May	0.0	0.0
0.5	0.1	October	0.0	0.0
5.3	2.9	November	2.0	0.3
16.4	10.0	December	5.9	1.1
72.9	46.4	Year	29.9	8.7