Yes, it’s been a cool day but that hasn’t stopped the sun from shining. Most haven’t come close to hitting 50°; however, Rapid City is actually closer to 60°. Importantly for those yet to harvest, it’s another consecutive day of drying out in the fields. A high pressure core continues to set up tonight, leaving us clear and quite cool.
Tomorrow will be warmer and sunny. The wind will still favor the north but we’ll have compressional warming and many should top 60° by early afternoon. After that, our much advertised cool-down comes late in the day. By sunset, we’ll be cold and breezy. That leads into an active period from Monday through Thursday.
Based on the timing of the initial storm early Monday, much of the Hills could see snow. Still, our more reliable tools bring in wintry mix for the far southern fringes of SD where slightly warmer air will cut in. This slushy mix will take some of the moisture AND there’s not a tremendous amount of moisture to begin with. Rapid City, for example, has roughly a quarter inch average. Spearfish has between a quarter and a half an inch but that will all change. The important thing is that the trend hasn’t been that heavy. This will move east towards Pierre by late Monday. Aberdeen and Sioux Falls will both be cloudy and cool but should stay dry until Tuesday. Sioux Falls still has a decent chance of wintry mix on Tuesday. As is often the case, snow will favor areas NW of town, while rain is more likely SE. Another system will arrive to the SE on Wednesday. Though it will be cold, we expect most of this to be rain. A minor warming trend will start later Thursday for many of us.