Wind Chill Advisories will continue Monday night and into Tuesday for wind chills between -15 and -30. The cold Canadian high pressure responsible for the cold air will move through KELOLAND Monday evening and night. As the high drifts away, light southerly winds will kick in to result in slowly warming temperatures later Monday night. Early nighttime lows will fall to near ten below in eastern South Dakota to the single digits below in central South Dakota.
The south winds are ahead of a clipper that will move through the upper plains on Tuesday.
The clipper will help bring a wintry mix to central and western South Dakota where Winter Weather Advisories are currently posted. Some of the wintry mix will contain light freezing rain/drizzle which will cause slick conditions for the morning commute in central South Dakota. By the time the moisture moves into eastern KELOLAND, it will be mostly snow.
Snow amounts will be an inch or less in many locations, but there are indications that Minnesota and extreme northeast South Dakota will receive a little more moisture, so an inch or two will be possible in western and southwest Minnesota. Winds will also be a little stronger to create reduced visibilities as the snow falls.
Christmas Day is looking dry with highs a couple of degrees below average. Another quick surge of cold air arrives on Thursday to bring temps back down to the single digits for highs. The cold air won’t last as temps will rebound to the thirties and forties by the first half of the weekend.