average amount of rainfall in seattle
Compared to other cities, the likelihood of it raining is greater but the rain in other cities is usually heavier, causing them to have larger averages. The annual precipitation recorded in Seattle ranges from 942 mm (37.07 inches) to 990 mm (39 inches). In order to get the volume of Seattle's annual precipitation, m3, we have to multiply the area of the city in square meters by the average amount of rainfall in meters. According to The New Book of Knowledge, the area covered by the city of Seattle is 238 square kilometers, or 238,000,000 square meters.