What about night temps?Indoors my temps drop to about 77. Even a little cooler us still O.K. as long as the tortoise isn't sitting in wetness.
For the happiest and healthiest Redfoot, temps of 80 to 89 with shade and water available are ideal.
Also, I've never seen any of mine bask.
Also keep in mind that they are not fond of very bright lights.
The fact is the adults can take a vast temperature range. Because of body mass, they take longer to cool.I was asking more for when they need to be indoors.