SIOUX FALLS, S.D. (KELO)-- Monday featured some well-above-average temperatures in KELOLAND…especially West River, where highs approached 90 degrees at times. It's a good reminder that, despite what the calendar says, summertime heat can be slow to depart. But just how long can we see that kind of heat? For Sioux Falls, the latest 90-degree day [...] ...read more read less