There's no direct sunlight as I live in a basement apartment, the ambient temp outside the tank is around 73-75, I'm guessing that above the hide its probably equivilant to the cold side temp, or like a midway point? I'm waiting for a new probe thermometer to come in the mail. Its not that she doesn't go inside the hide, I've seen her in there, she just seems to prefer the top? I'm hoping she's just a weirdo not uncomfortable haha.