Our last trip was the first week of May 2003, and I had read that the temperatures were supposed to be in the 80s, not too bad. But one of the days we were there it was like 99 degrees, felt more like 105 though. I don't think it was supposed to get that hot in May, but I guess you never know. I am going in September this year, supposed to be low crowds, but still very hot! I guess it's a trade off!