Mount Washington is located in the marine west coast climate zone of western North America.

Most weather fronts originate in the Pacific Ocean, and travel northeast toward the Olympic Mountains.

As fronts approach, they are forced upward by the peaks of the Olympic Range, causing them to drop their moisture in the form of rain or snowfall (Orographic lift).

Because of maritime influence, snow tends to be wet and heavy, resulting in avalanche danger.

This Mason County, Washington state location article is a stub.