Ok here's the deal. The old lady just got home. She was actually standing out on her porch looking for her cat. I brought him over and asked what the deal was. Apparently she was in Florida all week and she left the cat in the care of her kids (Late 20's early 30's I think). Well, I guess the cat got out one day and they couldn't find him so they called her and she said he'd be fine outside.

I asked her if she leaves him out all day/night and she said no, she had just been gone for a while on vacation. I didn't know she was gone, I just figured she was doing something at night. Anyway, the cat should be fine now, I shouldn't see him out all night anymore.