According to https://www.weather.gov/wrh/Climate?wfo=box the average high so far is 83.79 F with the next two days forecast to be 88 F, 81 F respectively, which would bring it to 83.84. So these two missing values would have to deviate by 3 F upwards on average to go to an average high over 84F.

The most interesting questions are those where you're uncertain all the way to the very end