SIOUX FALLS, SD — A thin layer of frost sparkles on the fields around Sioux Falls as the region wakes under a clear, cold sky. It’s a calm, deceptively mild morning before a burst of late-fall weather sweeps across eastern South Dakota, signaling a winter tease just ahead of the Thanksgiving rush.
The National Weather Service in Sioux Falls warns of rain arriving Sunday night, turning steady by Monday morning. Roads may become slick early Monday, especially for commuters and travelers heading along I-29 and I-90. Colder air filters in Monday night, bringing a rain-to-snow mix that could dust grassy surfaces and elevated bridges by early Tuesday.
While snowfall is expected to remain light, temperatures near freezing could lead to patchy black ice, particularly in rural areas and shaded roads. Winds will also increase late Monday, gusting up to 25 mph, adding a biting chill to the early-week weather.
By midweek, skies clear but temperatures stay cool — highs in the low 30s to mid-40s — as drier air settles in across the Plains. Thanksgiving Day looks mostly sunny and calm, offering good travel conditions regionally, though a major cold front expected late next week could bring heavy snow and subfreezing air to parts of the northern and central U.S.
Five-Day Outlook (Sioux Falls, SD)
- Sunday: Sunny, high 56°F
- Monday: Rain likely, high 51°F
- Tuesday: Rain/snow mix, high 41°F
- Wednesday: Partly sunny, high 33°F
- Thanksgiving Day: Sunny and cool, high 39°F
