Kechikan is almost always rainy. In Skagway, if you do the train or train and bus combo, which I liked better, you are going into Arctic tundra areas. But, the time I did that, I still wasn't that cold. The others can go either way. And I love Glacier Bay. But, the first time I was there, I started out bundled up like a kid going sledding and ended up getting a sunburn wearing a t-shirt. As I said...layers.