Same here. 86 for a high after a low of 40 and already down to 61. But I still keep the AC on all the time - it just switches on when needed. Too lazy to open and close windows... (I know, that's sad)
Logs do seem to hold an insane amount of heat. Not a bad thing in our climate. I'm trying to grow tomatoes next to a South facing log wall, maybe I'll get something this time!
We can't really grow tomatoes here, but my new house has a wall of dark logs facing south under an awning that could be a great microclimate so I'm trying to see what happens. These 16" logs retain a tremendous amount of heat
It's usually early September, but I've seen it as early as August 17 and technically, according to my landscaper, it can happen any month. Mostly because we radiate so well