enraged_camel parent
If weather was the main factor, we would expect the homeless to flock to San Diego -- or even any of the southern states -- and not San Francisco. So there's clearly something about SF other than the weather that attract a large number of homeless people.
I grew up in Mississippi, and, believe me, brother, you don't want to be living outside come August -- it's nothing at all like San Francisco weather [1]. As for the rest, see my second point; if you expect nothing good of a man, that is precisely what you'll get.