Klondike Gold Rush - Seattle Unit National Historical Park - Climate

Seattle has a marine-type climate. Winters are cool, and summers are mild and pleasant. The average annual temperature is 53 degrees, with an average low of 36 degrees in the winter and an average high of 69 degrees in the summer. The average annual rain fall is 39 inches, with 100 rain free days per year, and an average of 49 percent sunshine during the daylight hours. A rain coat, umbrella and sweater can come in handy at any time of the year.