Climate - The Coast Range is a temperate rain forest with an annual rainfall ranging from 60 inches to over 100 inches at higher elevations. Rainfall occurs mostly from October through June. The coastal climate is affected strongly by the Pacific Ocean. Temperatures near the coast seldom exceed 75 degrees in the summer and snow is rare in the winter. Inland, the ocean influence diminishes and summer temperatures reach the 80s and 90s, and snowfall is common in the higher elevations in the winter.
The Siskiyou Mountains are situated at a latitude that is subjected to weather of both arctic and tropical origin. Snow and rain are common in the winter, and summer temperatures can vary considerably depending on the origin of storm patterns.