It’s a cool start to a gorgeous weekend across the entirety of KELOLAND. A Frost Advisory remains effective through 9:00 a.m. CDT for most of the NE corner of South Dakota. Aberdeen dropped to 35° and Sisseton was even cooler than that. If you’re curious, that’s still nowhere near the record low; Aberdeen dropped to 22° way back in 1893!
Even with a weaker September solar angle, we’ll still manage a decent warm-up out of the cool morning. Highs will generally be in the 70s in eastern SD and in the 80s for the west. For those in MN and IA, the news isn’t as great; highs will be in the 60s.
Tonight we’ll have clear skies but more of a south breeze. That will keep the frost away and we’ll be milder heading into tomorrow morning. Speaking of, most will be warmer tomorrow as that south wind pumps in higher temperatures. There will also be SOME additional cloud cover but we’re still calling it mostly sunny. There’s a chance of late-day thunderstorms in the Black Hills tomorrow afternoon and evening. This spreads into north-central SD by late tomorrow night. The chance of rain heads east on Monday but should now primarily be rain showers, not thunderstorms. That could keep totals on the lower end. Most of the rain will be out of town before noon on Tuesday.
Tuesday and Wednesday will both be warmer than the days before. Thursday and Friday will be cooler, with another slight chance of rain.