Bandera Mountain is located in the marine west coast climate zone of western North America.

[4] Most weather fronts originate in the Pacific Ocean, and travel northeast toward the Cascade Mountains.

As a result, the west side of the Cascades experiences high precipitation, especially during the winter months in the form of snowfall.

[5] Precipitation runoff from Bandera Mountain drains into the Snoqualmie River.

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