Saturday will bring a mix of clouds and sunshine. There is still a lingering 30% chance of a shower or thunderstorm from the morning to about mid to late afternoon (especially in northern Missouri). By the evening, the chance of rain should decrease quite a bit. Highs near 79.
Sunday has plenty of sunshine but there is an isolated 20% chance of a shower or thunderstorm later in the evening. High near 84.
Sunday Night into Memorial Day Monday: A 40% chance of showers or thunderstorms from Sunday night and lingering through Monday. There will be pockets of sun as well Monday but any outdoor plans for the day probably need a plan B just in case. High near 80.