And SF isn't?
Sf gets its water from Hetch Hetche, clean hydro power too.
SF is a very different place in a lot of ways from the rest of California, and the US in general.
https://www.archives.gov/legislative/features/hetch-hetchy/h....
When the global average temperature rises some places will get cooler from time to time, there are multiple underdamped systems at play.
I never remember having heat waves in October or February. We also never needed AC, although maybe I'm just growing soft in my old age.
"Indian Summer" meant things might get a bit warm in September, then cool down. Weather stayed cool until the spring.
This summer has been oddly cool (at least in Berkeley), but got up to 92 2 weeks ago, which is not normal.