SIOUX FALLS, S.D. – A damp chill lingers over the Sioux Empire early Saturday, clouds holding steady in the predawn gray. After a quiet start, stronger winds and rain-producing systems will return late Sunday into Monday, bringing the first signs of November’s colder push.
According to the National Weather Service in Sioux Falls, mild air will hold through the weekend with Sunday highs climbing to the mid-60s. South-southeast winds will strengthen through the afternoon, gusting 25 to 30 mph ahead of a developing cold front. By late Sunday night, that front will draw widespread showers across southeast South Dakota, with the heaviest rainfall likely Monday morning.
Commuters along I-29 and I-90 should expect wet roads, scattered ponding, and lower visibility through early Monday afternoon. Though no severe storms are anticipated, gusty winds and steady rain could briefly slow travel and affect outdoor plans. Behind the system, cooler air filters in quickly, dropping highs to the upper 40s Tuesday with morning lows near the upper 30s—cool enough to feel like a first taste of winter.
By midweek, high pressure rebuilds, bringing dry skies and lighter winds. Temperatures will moderate slightly into the low 50s by Wednesday, setting up calm, crisp conditions heading into Halloween.
After this brief wet spell, South Dakota’s weather turns dry and seasonal—but a chilly November looms just ahead.
Five-Day Forecast for Sioux Falls, SD:
Sat: 59/48 – Mostly cloudy; calm, cool air.
Sun: 64/49 – Mostly sunny; breezy afternoon gusts near 30 mph.
Mon: 54/42 – Cloudy; rain likely, gusty southeast winds.
Tue: 49/38 – Cooler; lingering light showers, cloudy.
Wed: 52/36 – Mostly sunny; crisp fall day.
