Sioux Falls, SD – Arctic air is once again sweeping into the region Sunday night, with dangerously cold wind chills expected to plunge as low as –15°F to –30°F through early Monday morning. The National Weather Service in Sioux Falls has issued a Cold Weather Advisory in effect from 9 p.m. Sunday through 10 a.m. Monday for much of southwest Minnesota, east-central South Dakota, and northwest Iowa.
According to the weather service, residents in cities including Brookings, Madison, Pipestone, and Worthington could see the coldest wind chills before sunrise Monday. The advisory warns of frostbite risk within 10 to 30 minutes of exposure. Officials urge people to bundle up, wear layers, and limit time outdoors.
Forecast charts show temperatures in the single digits combined with wind speeds of 10–20 mph, driving the apparent temperatures well below zero. Even brief exposure can be hazardous for people and pets, with risks of hypothermia and frostbite.
The weather service recommends wearing hats, mittens, and multiple layers, and keeping pets indoors overnight. Travel plans early Monday may be impacted by the extreme cold, especially for morning commuters.
Residents are advised to monitor updated forecasts and check on vulnerable neighbors as temperatures remain dangerously low into the new week.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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