an analysis of national temperatures and precipitation, placing the data into a historical perspective Days of Hot Weather in Philadelphia. The most pleasant months of the year for Pennsylvania are June, August and September. In Pennsylvania, there are 5 comfortable months with high temperatures in the range of 70-85°. July 2020 temperature outlook from The Weather Company, an IBM Business. This was our 3rd day of 90 or warmer so far in 2020. 111°F (44°C), Pennsylvania. ... Whipping winds, dust storms and chokingly hot temperatures killed livestock and crops, and numerous heat records were set. 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 … This was our 30th day of 80 or warmer at SeaTac Int'l, our climate data point of reference. A typical summer has 4 of those kind of hot days. A date with a plus sign means it was that hot on at least one other day earlier that year. 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. About once every two or three years, the thermometer here reaches 100 °F (38 °C). The Old Farmer’s Almanac Long Range Weather Forecasts show deviations from normal temperatures and precipitation amounts, based on 30-year rolling averages gathered by government meteorological agencies, specifically NOAA and Environment Canada. 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. 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. The highest temperature measured during that time was 103 degrees Fahrenheit (39 Celsius) on July 16, 1988. 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