He would survive outside so long as there isn't any hard freezes in your future, My outdoor plant endured temps in the low 40's before I pulled her down, and a friend STILL HAS ONE OUT!!! We get to freezing pretty much every night now, she's covering her girl, and it's surviving.

The problem with going outdoors is discovery,.... if a neighborhood kid finds him or the FUZZ.

A window with direct sunlight for most of the day would work too. Just make sure the neighbors can't see. This is what I'm doing with my male White Widow,... I don't want him screwing my crop up, so he's in the bedroom window!