Click to enlarge We've finally emerged from the coldest air we've see this season as temperatures warm closer to and just above freezing on Wednesday but it's only a lull. An area of high pressure over Eastern Canada will allow cold air to spill back down in to the Midsouth and Upper Midwest but for a shorter period of time than the last round. This blast of arctic air is headed our way Wednesday night only to be followed by a possible light wintry mix by the weekend. Click to enlarge Computer models are not in good agreement about the timing of any moisture arriving to the region but if it arrives early Sunday, there is a good chance that freezing rain and sleet will mix with rain for the onset before switching over to all rain. That scenario will become more clear and we get closer to the weekend. In either case, temperatures will warm quite a bit into the 40's Sunday-Monday. You can identify the warming trend on the Looking Ahead graphic to the left. Near