This is the first time that I've heard the suggestion that people might not want to move to Los Angeles because of the weather. It's one of the few things that I miss since moving away from Southern California. It's not "hot," except for a few weeks each year (like a lot of places), and is milder than Florida, which seems to suit a lot of retired Canadians just fine.
I have to imagine that other reasons were the factor, like living and raising kids in a metropolitan area, road trip travel and maybe distance from Sweden (though those last two may be more perception than reality compared to Calgary).