November 7, 2019

Seattle Climate Package

The mild climate of the Pacific Coast is modified by the Cascade Mountains, and, to a lesser extent, the Olympic Mountains. The climate is characterized by mild temperatures, a pronounced though not sharply defined rainy season, and considerable cloudiness, particularly during the winter months. The Cascades are very effective in shielding the Seattle-Tacoma area from the cold, dry continental air during the winter and the hot, dry continental air during the summer months.
Download (PDF)