seattle weather year round average
The sun's rays reach the ground in Seattle during 43 percent of daylight hours on average year round, for a total of 1922 hours annually. Typically on 71 days a year the sky is mainly clear, with at most 30 percent cloud cover. Sunlight in Seattle averages 12 hours and 14 minutes a day. The shortest days of the year in mid December have 8 hours and 25 minutes of daylight. The year's longest days in mid June last 15:59 from sunrise to sunset.