Lived in Seattle for 20 years. August & September are generally very nice. The other 10 months are drizzle & fog, followed by fog & drizzle. If it gets cold enough in the winter, they get snow, and then everything just stops. The elevation changes are so severe that the streets are impassable with snow.
They have a lot of heavy drinkers and a lot of suicides, possibly weather related. IF Mt Rainier ever erupts, they are all so screwed!