jphbucks.....you should know by now that sometimes asking a simple question will start heated debate, sometimes defensive, about the subject you asked about but has nothing to do with the answer.
If you're hot, you're hot. It doesn't matter what causes it, who predicts it, what is was like ten years ago, you're hot. And only you can decide if you're hot or not. Nothing wrong with looking for someplace you believe will be cooler and making you more comfortable.
Rick used to say that in the summer he suggested staying north of the Alps but even that is getting hot. He also said that he finds it tough to sightsee when the temperature reaches 82 F/28C. He's from the Pacific Northwest where really high temperatures are not as common as say in Florida.
What a person believes is too hot for them really depends on what they are used to.
As far as airconditioning goes and whether you need it or not....it's simple....if you are used to air conditioning then you probably need it. If you are not used to air conditioning then you probably don't need it. Except there will be a point where most people will want air conditioning of some type. (I said most people, I'm waiting for those who don't like A/C to respond for the kill.)