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Annual snowfall along the coastal plain averages 1 to 3 inches (2.5 to 7.6 cm) a year, including years with none. Further inland, between the Coast Range and the Cascades, snowfall generally averages from 5 to 10 inches (13 to 25 cm) a year.
Eugene's average annual temperature is 53.1 °F (11.7 °C), and annual precipitation at 40.83 inches (1,040 mm). Eugene is slightly cooler on average than Portland . Despite being located about 100 miles (160 km) south and at an only slightly higher elevation, Eugene has a more continental climate than Portland, less subject to the maritime air ...
Eugene, at the southern end of the valley, is 425 feet (130 m) above sea level and receives 46 inches (1,200 mm) per year. Conversely, at the northern end of the valley, Portland is 50 feet (15 m) above sea level and receives only 36 inches (910 mm) per year. Most rainfall occurs from October to May, and it tends to be heaviest between November ...
Annual precipitation averaged 15.49 inches (393.4 mm) between 1971 and 2000. The wettest calendar year since record-keeping started in 1888 is 1998 with 24.13 inches (612.9 mm); the driest was 1924 with 7.03 inches (178.6 mm) – less than the total for the wettest month of December 1964 of 8.96 inches (227.6 mm) fall, [42] including the melt ...
An estimated 24 inches of snow in 24 hours were reported at Willamette Pass, and there were expectations for another 2 to 6 feet of snow between Thursday and Saturday, potentially making road ...
Annual precipitation differs from 60 inches (1,500 mm) in some parts to up to 120 inches (3,000 mm), with the higher amounts coming in the higher elevations. The average high temperature in January is 36.3 °F (2.4 °C), and the average high in July is 61.9 °F (16.6 °C) with temperatures also varying by elevation. [2]
The period from 1931 to 1934 was the driest stretch on record, with only 0.64 inches (16 mm) of rain over a 40-month period. The average annual precipitation in Death Valley is 2.36 inches (60 mm), while the Greenland Ranch station averaged 1.58 in (40 mm).
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.