Overnight Saturday into Sunday morning, clouds will build then showers will eventually make their way into KELOLAND. Rain will start in the southwest corner of South Dakota between 1AM and 3AM and slowly move to the north and east. Rain looks to mainly stay south of I-90 before 7AM. Lows bottoming out mid to upper 40s for central and eastern KELOLAND, upper 30s in the west.
Then showers and thunderstorms will last most of the day Sunday. Stronger storms will likely be in the southeast corner of South Dakota. High temperatures Sunday will be cooler overall, ranging from the mid to upper 40s in the west, to mid to upper 50s for central and northeastern KELOLAND, and low to mid 60s for the southeast.
For Monday, a leftover rain showers for the eastern side of the state slowly moving out of the area and look to be mostly gone by Monday evening, highs still cooler, low to mid 50s. Rest of the work week will be cooler, highs mostly in the upper 50s but closing in on the 60 degree mark by Saturday.