Summer is a very different concept for residents of the coastal Bay Area than it is for just about everyone else in the contiguous 48 states. Not for us the warm evening on the front porch (I know, what front porch?). We have to wear something a bit heavier than shorts and t-shirts as we stroll about. Sometimes "summer" involves having to wear 2 or 3 layers of clothing . I once saw a (seemingly sane) woman (an out-of-towner, no doubt) wearing ear muffs in July. We're quite used to nasty comments and sympathetic acknowledgment regarding our lack of balmy breezes (we experience more of a strong, cold gale).
Still, if it's sticky, sweltering heat you crave, you've not got far to go. A quick BART ride will remedy those chill blains. Places like Sacramento, a relatively short drive away, will warm you up 40F degrees on some days. Fun.
The point of all this is that even die hard, fog-loving residents of the coast need a bit of a break from the June gloom... on occasion.