2015 late spring got progressively drier and warmer. Opposite of this year, at least through early June.
SEA had more rain in the past two weeks than they managed in May/June combined that year.
Yeah... pretty easy down there to be decent in a cold trough. The Seattle area and King County tend to get the worst of it... like Friday when it was dark and gloomy in Seattle but sunny to the north and the south.