Restaraunts. No sushi? Heretic! Oh, well, Fuki in Palo Alto has lots of things besides sushi. :) But you must try the beef ume shiso.

If you like italian and/or seafood, Lou's Village in San Jose is wonderful, and a piece of San Jose history to boot.

As for weather, this is the time of year we set the Northern California environmental controls to "Fog and Rain". The maintenance guy says it's necessary; keeping the system on "75, sunny, and clear" 11 months out of the year isn't good for it. The temps will be around 60 daytime, but could get chilly morning/evening in SF; bring a light jacket or sweater.

Northern California's wonderful for food; you can find almost every ethnicity well-represented.