South Dakota – Breath fogs instantly in Sioux Falls as the day begins under biting cold, stiff air, and a wind chill that stings exposed skin. Pavement looks dry, but cold-soaked roads and bridges can hide slick spots early, especially for commuters and anyone heading out before the sun gains strength.
According to the National Weather Service in Sioux Falls, temperatures start the morning near 5 degrees with wind chills near minus 7. Light southeast winds increase through the day, gusting over 25 mph at times, while highs recover only into the mid-30s. That slow warmup keeps frost and refreeze concerns in play through the morning hours, particularly along I-29, I-90, and untreated side streets.
Conditions improve slightly into Saturday as clouds thin and sunshine returns. Afternoon temperatures hover in the mid-30s, but once the sun drops, readings fall quickly. Saturday night lows dip near 15 degrees, allowing any melted snow or moisture to refreeze fast. Drivers should stay alert after dark and plan extra time for travel.
Sunday remains quiet and seasonable, though the pattern is already shifting. Meteorologists are tracking a gradual warm-up early next week, with highs climbing into the 40s by Monday and Tuesday. That trend brings a brief break from harsh cold, but it also sets the stage for a possible winter tease later in the Christmas travel window if colder air returns behind the warmth.
Now is the time to prepare. Dress in layers, check vehicle batteries, and watch shaded roads during early drives. Even without falling snow, December cold can create dangerous conditions fast.
More updates may follow as Christmas travel approaches. Feeling the cold where you are? Share what conditions look like in your neighborhood.
Five-Day Outlook for Sioux Falls, South Dakota:
Saturday: Becoming sunny, high near 35
Sunday: Mostly sunny, high near 35
Monday: Mostly sunny, high near 44
Tuesday: Partly sunny, high near 40
Wednesday: Partly sunny, high near 47
