In Georgia, we have a saying "It's not the heat, it's the humidity that kills you" and it's so true! It's been in the mid to high 90's here and the humidity is so high it's like swimming thru air when you go outside.
The babies go outside during the day for pee pee breaks, but when I get off work I wait until the sun goes down ( starts around 8:30) and then take them outside for a long play time. I also have a water bowl outside and keep it filled when they're out there so they don't overheat.
I'm ready for winter
Usually averages 55 to 60 degrees here with really cold snaps that last a couple of days during winter here.