The weather pattern this week is stuck in summer gear and won't be changing much through Saturday. The winds aloft are very light over Kansas and the hot, humid weather is stuck in place. Eventually, the storm that is tracking through the Pacific Northwest will move east, but that's not going to happen until Saturday.
Until it starts to move, the best chance for isolated showers/storms will be focused over far western Kansas and eastern Colorado. Any rain that does develop will be extremely isolated.
There is a change to the Labor Day forecast. The front that we've been forecasting to move in on Monday is going to arrive a little slower and it could become stationary Monday evening. It still looks like much of Kansas will have a chance to see some rain and storms, but the temperatures look to stay quite warm. I would expect highs to be around 90, and may not cool off much until mid to late next week.