Yesterday much of eastern South Dakota was in the 40s. Tomorrow many of those same areas won’t get above zero.
A potent arctic front is dropping down from the south. While temperatures are mild at the moment, they will be falling across the region by the afternoon, as strong north winds 20-40 mph will bring in extremely cold air. There may also be some light snow, but it should be less than 1”. A wind chill advisory takes effect this evening, with wind chills of -20 to -35 across most of KELOLAND.
Overnight, cold air grips the region. Lows will be in the teens below zero, as the winds slowly subside.
Tomorrow we will have sunny skies, but it won’t feel like it. We’re forecasting subzero highs in eastern South Dakota. Rapid City looks to be a warmer spot, with a high of 15.
Cold air will remain in the region through the first half of next week. Highs will be in the single digits to teens East River. We also have a chance of light snow on New Year’s Eve and New Year’s Day, before temperatures moderate for the end of the week.