For example, the hottest temperature recorded in Oregon is 119 degrees which was set twice in 1898, once on July 29 in Prineville and then on August 10 in Pendleton. 111°F (44°C), Pennsylvania. The National Weather Service recently issued long-term climate projections for June, July and August 2020, which show a warmer-than-usual climate is possible. The temperature at Philadelphia climbs into the 90s Fahrenheit for 24 days a year on average, scattered throughout late spring and summer. August 2020 Most of the Lower 48 will likely have above-average conditions as the summer ends. The highest temperature measured during that time was 103 degrees Fahrenheit (39 Celsius) on July 16, 1988. These records were observed at Pittsburgh International Airport and go back to 1948. Looking ahead, while temperatures will remain hot, rain chances return on Tuesday afternoon with isolated to maybe scattered rain around. This was our 30th day of 80 or warmer at SeaTac Int'l, our climate data point of reference. The planet just had its hottest November on record, and 2020 may end up beating 2016 for the ignominious title of the warmest calendar year. A day of 100-degree weather can show up in July or August. Days of Hot Weather in Philadelphia. an analysis of national temperatures and precipitation, placing the data into a historical perspective This was our 3rd day of 90 or warmer so far in 2020. About once every two or three years, the thermometer here reaches 100 °F (38 °C). A typical summer has 4 of those kind of hot days. In Pennsylvania, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Pennsylvania are June, August and September. Across Pennsylvania, temperatures generally remain between zero and 100° F and average from near 47 in the north-central mountains to 57° F annually in the extreme southeast.The highest temperature of record, 111° F, was observed in Phoenixville on July 9 and 10, 1936, while the record low of -42° F occurred at Smethport on … July is the hottest month for Pennsylvania with an average high temperature of 83.0°, which ranks it as cooler than most states. More about our weather records Philadelphia Weather History for the Previous 24 Hours Show weather for: Previous 24 hours December 11, 2020 December 10, 2020 December 9, 2020 December 8, 2020 December 7, 2020 December 6, 2020 December 5, 2020 December 4, 2020 December 3, 2020 December 2, 2020 December 1, 2020 November 30, 2020 November 29, 2020 … The averages from 1981 to 2010 are the latest available … ... Whipping winds, dust storms and chokingly hot temperatures killed livestock and crops, and numerous heat records were set. 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