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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]
Annual precipitation throughout Oregon's high desert region is relatively low, averaging less than 15 inches (380 mm) per year in most areas. Bend , the region's largest city, only receives 12 in (300 mm) of precipitation per year.
Between April and October, the precipitation in Tillamook is comparatively lighter than other coastal cities, but still remains much wetter than the population centers in the Willamette Valley. Tillamook's annual precipitation averages about 88 inches (2,200 mm) compared to only 36 inches (910 mm) in Portland.
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).
Rainfall amounts can range from an average of 66.40 inches (1,687 mm) per year [28] in the far northwest hills, compared to 43.66 inches (1,109 mm) per year at Oregon State University, which is located in the center of Corvallis.
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The average annual precipitation is 76.21 inches (1,936 mm). The average July afternoon humidity is 75%, and the average January afternoon humidity is 84%. [ citation needed ] The record high in Lincoln City is 100 °F (38 °C), observed on August 2, 2017, while the record low of 4 °F (−16 °C) was observed on January 31, 1950 and December 8 ...
Climate chart for Oregon City. ... The annual precipitation is 44.81 inches (1,138 mm). It is mainly concentrated in winter (November to March), and the precipitation ...