I live in Florida where the summers are hot and humid. I close the blinds on the south and east side of the house in the morning to keep the sun out. I go for a walk every morning between 6-7 before the sun comes up. This morning it was actually cooler than it has been for a while (upper 70's) but once the sun comes up it doesn't take long to get to the 90's and above.
I'm surprised at how low most of you keep your AC. We keep ours at 80-82 and run ceiling fans on low in the room where we are at the moment. The AC keeps things dry as well as it is cooler than outside so it feels cool to us.