The South has been getting cooked all summer. Meanwhile, the North is already getting a taste of fall. So when do you finally get a break? The 100s should start fading this weekend. The 90s? They’re sticking around longer. First decent shot below 90: Tulsa, OKC, St. Louis: 21st Louisville, Knoxville: 22nd Nashville, Birmingham: 23rd Memphis: 24th Little Rock, Jackson: 26th Dallas and Houston? Probably October. And actual fall weather, 70s in the Deep South, still isn’t on the map.