You can get a fairly cheap thermostat for about 16-30 dollars. (of course you can splurge and go 100-1000) The Inkbird has a cooling and warning feature to it too. I set mine on a fan in the summer with a warning when the temps get too high so I can address it.

Also, personally, I provide a shoebox-sized water dish (Sterlite shoe boxes) so they can soak and cool off in the winter. (I keep the humidity under control by putting it near the screen end of the enclosure.) Lets them cool off when especially hot, and they like using it for shedding purposes too. I know that most keepers usually put small water dishes in usually, but in a hotter climate, they seem to really enjoy it, and the water will keep cooler than the enclosure. (Plus mine knocked over the water dish when it was tiny too frequently, so I gave up and went bigger)

I don't get central air and my air conditioning isn't always good enough to reach without a power outage, so it lets them figure it out themselves. I also usually change the water with fresh cool water more frequently during summer so they can get a cool bath if need be.