We were just there (2 weeks ago). The water had to be at least 85 degrees.
On our last day the air temp was around 72 with a constant breeze. It was a bit cold waiting to go down the volcano slide.
The pool is a little small. There were few people at the pool even with the "world" being very very crowded that week.
The other pool, the "quiet" pool is undergoing renovations and is closed off.
Note: the slide "opens" at 10 am when the lifeguards come on duty.