Usually South Dakota gets flurries and light snow in October, not this kind of dumping with the winds - that is February weather.
Got it.
I only lived in South Dakota for one year. The first snow of the season was a blizzard in October that dumped 21 inches of snow.
It never got warm enough to melt it, and was followed by numerous snowstorms throughout the winter. Snow was piled so high it covered some of the windows. I went out one morning to get the mail, and sunk to my shoulders in the drifted snow.