Portland, "The City of Roses", is the largest city in Oregon and the second largest city in the Pacific Northwest. Portland was incorporated in 1851 and is the county seat of Multnomah County. The city extends slightly into Washington County to the west and Clackamas County to the south. It is governed by a commission-based government headed by a mayor and four other commissioners. Portland lies within the Marine west coast climate zone. Summers in Portland are warm, sunny and rather dry, with July averaging a high of 27 °C (81 °F) and a low of 14 °C (58 °F). Winters can be mild to chilly, and very moist, with January averaging a high of 8 °C (46 °F) and a low of 3 °C (37 °F). The rainfall averages 42.7 inches (1,080 mm) per year in downtown Portland. Portland averages 155 days with measurable precipitation a year. Snowfall occurs no more than a few times per year, although the city has been known to see major snow and ice storms thanks to cold air outflow from the Columbia River Gorge. The city's winter snowfall totals have ranged from just a trace on many occasions, to 154.7 cm (60.9 inches) in 1892-93. The lowest temperature ever recorded in Portland was -19 °C (-3 °F), set on February 2, 1950. The highest temperature ever recorded was 42 °C (107 °F), set on July 30, 1965 as well as August 8, 1981 and August 10, 1981. Temperatures of 38 °C (100 °F) have been recorded in each of the months from May through September. http://wikitravel.org/en/Portland_(Oregon)