I lived in the Seattle area for many many years, and it got plenty of sun, summer and winter, and most of the non-sunny weather was best described as "mild." Moreover, on sunny days, it's not oppressively hot most of the time. The area's rep for bad weather is pretty undeserved (yeah I know the joke "shhh, don't tell, some Californians might hear!").
I don't like Seattle for cultural reasons, but the climate is very nice.