Posted in Uncategorized Most extreme temperatures in the history of Pennsylvania – ABC27 July 22, 2022 – All-time highest temperature: 111° F (Phoenixville 1 E on July 10, 1936) – All-time lowest temperature: -42° F (Smethport on Jan. 5, 1904) https://www.abc27.com/weather/most-extreme-temperatures-in-the-history-of-pennsylvania-3/