Here in Las Vegas it's been about 104 to 107. I take Doo Doo out at about 5:45 a.m. then again at noon but she does her buisness and goes right up the stairs again, and at 8 p.m. she goes out for her last call of duty. I feel bad for her being in the house all day. But I think she's happy sleeping inside with the A/C running all day. I've only had her for a week today so I don't know how she does in cold weather, we're still getting to know each other.