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Snowfall in Oregon is greatest in the Cascade Range. Based on data from ski resorts and a few official weather stations, average annual snowfall in the Cascades can range from 300 to 550 inches (760 to 1,400 cm). [3] The state's largest annual snowfall on record, 903 inches (2,290 cm), occurred at Crater Lake in the Cascades in 1950. [6]
The list of snowiest places in the United States by state shows average annual snowfall totals for the period from mid-1985 to mid-2015. Only places in the official climate database of the National Weather Service, a service of NOAA, are included in this list. Some ski resorts and unofficial weather stations report higher amounts of snowfall ...
Average annual rainfall is 60.74 inches (1,543 mm) and there are an average of 138 days with measurable precipitation. The wettest year was 1996 with 95.35 inches (2,422 mm) and the driest year was 1976 with 31.69 inches (805 mm). The most rainfall in one month was 26.99 inches (686 mm) in November 1973.
Mean annual rainfall is 37 to 60 inches (96 to 152 cm), and summers are generally dry. Historically, the region was covered by rolling prairies, oak savanna, coniferous forests, extensive wetlands, and deciduous riparian forests. Today, it contains the bulk of Oregon's population, industry, commerce, and agriculture.
Laurel Mountain is the fourth highest peak in Oregon's Central Coast Range with an elevation of 3,592 feet (1,095 m). The peak is located in Polk County west of the city of Dallas . [ 3 ] [ 4 ] In 1997 it was labeled the wettest place in Oregon, [ 5 ] and in 1996 it set an all-time calendar year rainfall record for the contiguous United States ...
The average annual rainfall for the island is 86 inches (2,200 mm). [74] There is a distinct dry season from January to June, and a rainy season from July to December. [75] Typhoons frequent the island, which can lead to excessive rainfall. During El Niño years, dry season precipitation averages below normal.
The average annual precipitation between 1961 and 1990 was 70.99 inches (1,803 mm), [10] with the wettest period being from July 1968 to June 1969 with 102.15 inches (2,594.6 mm) and the driest, like most of Oregon, from July 1976 to June 1977 with 38.94 inches (989.1 mm).