From the Buffalo News:
Brrr … it’s cold outside, so put on your bathing suit and head for the water. No, I don’t mean outside, I mean head to one of several indoor waterparks that are an easy drive from Buffalo. While all of these waterparks are open year-round, they are especially fun as a winter destination when it’s freezing outside and you’re longing for summertime fun. Most waterparks are kept at a balmy 84 degrees, so they’re a perfect place to warm up on a cold day.
While most people who go to the waterparks are overnight guests at the hotels connected to them, the facilities usually have a limited number of day passes available to those not staying overnight; always call first to check availability if this pertains to you.