Since I'm on the theme of changes in late summer in the Interior, here's another one. Hot days are concentrated near and not long after the Solstice. Here is a plot of the frequency of days (by week) with maximum temperatures ≥80F. Notice the sharp peak in early July and then the dramatic fall. This is a reflection of both the increased cloud cover (i.e. the rainy season) and the lowering sun angle. The solar noon sun is now less than half way up the sky.