I know I'm probably jinxing it, but this has been, seemingly, one of the mildest summers for us in San Jose. We had a 95 way back in early June, but other than that, everyday has been topping out at around 79, with last week being in the low 70s (in August!). We'll usually get at least a couple hundred-degree days, as well as at least two weeks worth of 90+, but it just hasn't happened this year. Great news for our A/C-deprived home.
However, the pessimistic scientist in me knows that these three months of below-average temps dramatically increase the chances for an above-average September/October.