From KELOLAND weather e-update:
"Record cold this morning in eastern KELOLAND as temperatures fell to the 20s and 30s below zero. Clouds moved into western and central South Dakota during the overnight which helped keep temperatures a little warmer with numbers in the single digits above and below zero. Temperatures will remain cold this afternoon with highs struggling to get above zero in parts of eastern KELOLAND while central and western KELOLAND will get to the single digits and teens above zero. Throw in any amount of wind, and we’re talking wind chills of -30 to -40, Wind Chill Advisories cover much of the area today. Snow will also move west to east throughout the day with accumulations near an inch possible. The snow should hold off until this evening and night for eastern KELOLAND with amounts near an inch possible.
The cold air will stay with us with another round of snow possible for Tuesday/Wednesday. I wouldn’t be surprised for a couple inches of accumulation followed by another blast of cold air allowing temps to fall to the teens and 20s below zero for Thursday or Friday morning."