When my family and I decided to go on a Sunday morning the temperature was expected to reach 95 degrees and we were debating whether to go or stay at home in the pool. I am glad we decided to go.
In spite of the high temps, we had a great time. Universal created an environment in which high temps will not be a hindrance to having fun. There is a lot of shade everywhere and a lot of fans blowing cool and wet air (mist). It feels like they created their own weather.