Or, keep fish which can handle those temps.

My plecos can do so. I have outside tanks which I use in the summer. They are on a screened terrace which is all screens on 3 sides. Tanks temps will hit the low 90sF at times. The fish do not mind.
I had a 40B which held a pair of wild discus, a small school of rummy nose tetras and and 6 Hypancistrus L450 I had been growing out to spawn. A heater failure pushed the water to 104F when I discovered it both discus were dead and the rummy nose were all balls of mush. But the 450s were all hunkered down in caves and all were alive. I did a 50% WC fast and got the temps into the low 80s. About 4 weeks Later the 450s spawned for the first time.
@Slaphppy7
Why don't you just cool the water in a rubbermaid can and then add it to the tank? And don't you have air conditioning? That should keep the tank itself from getting that hot.