man, it was hot every time we went down there, and way warmer than past summers. Generally, I need a sweater on during summer days out there, especially in the evenings. San Jo- same story, although it's generally a little warmer in South Bay.
Either way, being here since 2010, it's gotten balls hotter every damn summer and much, much less rain. The mountains are always nice, but not a whole lot to do after a day on the lakes. Town populations of a few hundred to a few dozen doesn't make for a fun night life...or anything that isn't outdoor related.