![]() The highest recorded temperature in Portland is 107.1☏ (41.7☌), set on July 30, 1965, while the lowest temperature on record is -2.9☏ (-19.4☌), set on February 2, 1950. The temperate climate is suitable for growing roses. Snowfall is light to the tune of 4.4" (112mm) during the winter with few incidences of frost. The city experiences average annual precipitation of 36" (914mm) with heavy rainfall between November and February. The highest predicted temperature is a moderately hot 73. probability: 6 Precipitation: 0' UV index: 5 On Friday, June 9, the weather will be cloudy as well. Winter has the cloudiest skies of the year as the average humidity registers above 80% most of the time during the cold season. 73☏ / 54☏ Wind: 5mph W Humidity: 61 Precip. The average annual sunshine in Portland is 2341 hours, with a peak in July and August. Spring and fall often have unpredictable weather with occasional incidents of warm and cold fronts that may push the temperatures above 80.1☏ (26.7☌) or below 39.9☏ (4.4☌) during the day. Winters are cold, with an average low temperature of 35.2☏ (1.8☌) during the coldest month of December. Portland summers are warm, dry, and sunny, with the average high temperature peaking at 81.1☏ (27.3☌) in the warmest month of August. The Oregon Coast Range and Portland's inland location reduce the influence of the Pacific Ocean on its climate. The vegetation consists of a variety of trees such as fir, hemlock, red cedar, and broadleaf maple. The terrain is mostly flat except for the foothills of the Tualatin Mountains on the western side of the city. ![]() Portland lies at an average altitude of 15 meters above sea level within the Willamette Valley. The temperate latitudes, low altitude location, and distance from the Pacific Ocean mainly influence the climate of Portland. It lies in the Pacific Northwest part of America, within the state of Oregon, at the confluence of the Columbia and Willamette rivers. Portland experiences a temperate oceanic type of climate (Köppen climate classification Csb) with warm, dry summers and mildly cold, wet winters. ![]()
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