Solid C.
Summers are way, way too dry and requires a jacket almost every evening. Daytime summer temps are far superior to San Francisco though. Winters are too cloudy and much of the rain falls in prolonged drizzle or the lighter variety. Thunderstorms are non-existent and handsome warm rain is impossible.
The best climate in the Bay Area is this one with summer days in the upper 80s and nighttime lows in the upper 50s:
https://en.wikipedia.org/wiki/Concor...fornia#Climate