South Dakota — The cold hits hard this morning in Sioux Falls, where the air feels sharp and unforgiving. Wind pushes across open ground, biting through layers and forcing people to hurry indoors.
As of early morning, temperatures sit near 4 below zero, with wind chills plunging to around 25 below. The National Weather Service warns that frostbite can develop quickly on exposed skin. Even short trips outside require full winter gear today.
Skies stay mostly clear through the morning, but the cold remains locked in. Afternoon highs struggle to reach the low teens. Roads remain mostly dry for now, but shaded areas and bridge decks stay slick. Drivers along I-90 should stay alert, especially during early travel.
Tonight turns even colder. Temperatures fall near 1 below, allowing rapid refreezing wherever daytime melting occurs. This is prime time for flash freezing, especially on untreated neighborhood streets and parking lots.
Tuesday brings a shift. Clouds increase by late morning, and snow develops during the afternoon. Accumulations look light, generally under an inch, but timing matters. Snow arrives during active travel hours, reducing visibility and traction. Plan extra time if commuting after noon.
Tuesday night into Wednesday keeps snow chances going. Patchy blowing snow develops as winds increase, briefly dropping visibility. By Wednesday afternoon, skies improve, but winds stay brisk. Highs approach the upper 20s, though it still feels colder.
Thursday delivers another cold punch. Highs fall back into the teens, and nighttime lows dip near 10 below. Wind chills again approach dangerous levels late in the week.
Looking ahead, 6–10 day outlooks show colder-than-normal air lingering across the northern Plains. While the Southwest warms, winter holds firm here.
Limit outdoor exposure, prepare vehicles, and watch changing conditions closely.
How cold did it feel in your neighborhood this morning?
Five-Day Outlook for Sioux Falls, SD
Today: Partly sunny, high near 12
Tuesday: Snow developing afternoon, high near 20
Wednesday: Snow and blowing snow early, high near 29
Thursday: Partly sunny, colder, high near 17
Friday: Sunny and cold, high near 2
