Overnight Sunday into Monday, low pressure will move to the east far enough so rain in the western half of the state will shift to moving in a more southerly direction. Also, cold air will have been pulled far enough south that there could be some rain and snow mix in the west and still scattered rain showers in the east. Lows back down into the mid-30s for the west and 40s in the east.
The work week will have continuing rain chances as that low pressure will sit and spin over KELOLAND bringing on and off rain until it moves on in the middle of the week. Tuesday looks like South Dakota will get a break from the rain before another round swings in from the north Wednesday morning. Then the leftovers from that round will slowly move out on Thursday leaving KELOLAND with mostly cloudy skies for Friday. The next weekend will have a weak cold front pass through the area bringing a line of showers that will pass through the area Saturday and be gone by early morning Sunday.
Temperatures this week will be colder. High temperatures will be in the 40s for Tuesday and Wednesday then slowly warming back up to the mid-50s by the weekend.