Well sire,
I cannot speak for De but here in southwest Ohio it was hotter and muggier than ever the past week. High 90's with humidity levels up there as well.
I hate humidity and HEAT. Always have.. No leaves turning colors here and I have several large trees in my yard.
I believe you about your place because I know the climates are different and rainfall throughout the year affects that as well.
I look forward to the leaves changing and the wonderful colors of all the trees. The drive through west Virginia is particularly beautiful with all the colors of the tree leaves on the mountain sides.
I bet the colors around De and Miz De are just spectacular this time of year..