The combination of short days and rain makes for a depressing winter in Seattle, which gets dark around 4pm. Stock up on vitamin D pills. It would be nicer if it snowed like Minneapolis, where the snow is dry and brightens the mood, but Seattle is steel gray. OTOH, there are spells of nice weather.
Seattle summers can be quite nice, but there are days in June as cool and damp as other cities in February, so on cool and rainy June days people wear parkas to baseball games.
Socially, Seattle is described by many newcomers as "Seattle Ice," where the locals seem stand-offish and cool, for years. They'd be shocked to hear themselves so described, but are nonetheless somewhat introverted. Political correctness is the Seattle norm, so if you are conservative, it won't seem like home.
Better weather and friendlier people are found in eastern Washington, so if you get the first year in Pullman or Spokane, enjoy it. Beautiful territory and wide open spaces there.
