we always HOPE for hi 70s and an occasional low 80, but it has been very cool. You will be further
south and in a bit wetter climate---more like Seattle. Pack maybe just 1 pair of shorts and slacks/light sweaters/a fleece jacket or wind-weather jacket and light hat and gloves(those little stretchy things I keep in all my jacket pockets). It might be quite cool when surrounded by icebergs and glaciers! Nan would be your best source for temp info---it's in her neck of the woods.