We are here now. We arrived this past Sat. and will leave this coming Sat. So far the weather has been fine. The mornings are nice and cool, but around 11:00 it starts to get a bit toasty. It rained for a couple of hours yesterday morning and then cleared off to be a beautiful, low humidity day.
I think if you do alot of your heavy park stuff during the mornings, go back to your resort around lunch, take a swim or a nap, then go back to the parks in the late afternoon, you'll be fine. We did this the other day and it worked out great.
We are going over to Typhoon Lagoon this morning, so the warm/hot weather should be nice.
As the saying goes.... "A hot day a Disney is better than........"
Hope you have fun!
Duane