Monday: Boundary tries to move north giving us a warmer day. If the sunshine breaks out as clouds break up, then yes, we will warm into the 70's. But if clouds hang tough, it will stay in the cooler mower 60's at most.
Tuesday: Boundary forecast to be north of our area. If this happens, then sunshine will mix with clouds will lead to very warm and humid conditions as temperatures soar into the 80's. If this happens then as the boundary moves south again, some strong thunderstorms could develop. But what if boundary hangs tough, and there are more clouds? Much cooler.
Wednesday: Boundary likely stays to our south leading to cloudy and cool conditions.
Thursday: Boundary likely remains to our south still but may begin to push north late or overnight.
Friday: Boundary pushes back north, as warm tropical air overrides our cool air leading to periods of rain with embedded thunderstorms. There could be some heavy rain. But what if boundary does not move north? Then cloudy and cool but mainly dry.
Saturday: Boundary either to our north or moving through the area leading to scattered showers and thunderstorms. It will be warmer but how much warmer will depend on the amount of sunshine and that will depend on position of the boundary. If to our north = more sunshine. If moving through = more clouds.
Wednesday and Thursday are perhaps the easiest days to forecast at this time, and that is simply because this time of year east of the mountains, boundaries tend to stay further south and hesitate to move north. So, with the boundary forecast to our south Wed and Thu makes sense.
Outside of those days … lots of volatility and forecast errors very possible. By best guess is below.
That is about all for now. Enjoy.