I start bringing mine out in the spring. I really dont know an exact temp tho.
I would say 70's. Its winter here now so I have to wait. Where are you from?
When I had box turtles I left them outside all year long and let them hibernate. Mine would come out around February or March. Do you let them hibernate or are they inside and not hibernating. It depends alot on what part of the world you are in
I've never kept any inside, only if one was sick or underweight, but it's a BIG worry leaving them outside. It's such a relief when I start seeing them.