South Dakota – A cold, steel-gray sky hangs low over Sioux Falls this morning as light flakes drift across fields and wet pavement begins to firm in the bitter December air. Drivers on I-29, I-90, and city arterials should brace for rapid changes as winter weather tightens its grip on the region ahead of a significant Saturday snow event. Even thin slush may refreeze quickly, creating early black-ice danger.
According to the National Weather Service, a Winter Weather Advisory begins 6 a.m. Saturday through 6 p.m. Heavy snow bands arrive early, intensifying through midday. Meteorologists expect 2–5 inches, with isolated higher totals toward northwest Iowa and portions of northeast Nebraska. Bridges and overpasses will turn slick first, and visibility may drop sharply during heavier bursts. Plan extra time if traveling—conditions may deteriorate fast after sunrise Saturday.
Today stays mostly cloudy and cold, with northwest winds strengthening through the afternoon and gusts near 20 mph. Snow is possible before mid-morning, followed by a brief mix and gradual clearing. The cold snap holds firm tonight, keeping roads vulnerable to refreezing.
Saturday’s system becomes the peak hazard, producing steady snow and gusty winds up to 25 mph. Drifting may develop in open stretches west of town. Snowlight improves Saturday night, but temperatures plunge into the lower teens, heightening flash-freeze risk.
Sunday brings a welcome break, offering mostly sunny skies and mild north winds. Highs near 29°F won’t erase all lingering slick spots, especially in shaded neighborhoods and rural routes.
Long-range models continue to highlight a more active winter pattern Dec. 11–17, with clipper systems and lake-effect snow expected across the Midwest—something early holiday travelers should monitor closely.
Five-Day Outlook for Sioux Falls
Today: Cloudy, 34°F; slight wintry mix.
Saturday: Heavy snow, 22°F; 2–5”.
Sunday: Mostly sunny, 29°F.
Monday: Partly sunny, 29°F.
Tuesday: Mostly cloudy, 38°F; slight rain chance.
