The temperate rainforest climate is primarily found in the western part of Washington state along the Pacific Coast.

The temperate rainforest climate along the Pacific Coast is most notably found in the Olympic Peninsula in Washington state. This region is characterized by high levels of precipitation (often more than 100 inches annually), mild temperatures, and lush vegetation, including towering trees such as cedars and Douglas firs. The combination of moist oceanic air and the mountain ranges creates ideal conditions for this unique biome, which is rich in biodiversity. The temperate rainforest is one of the world's rarest ecosystems and is home to many unique plant and animal species.