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Climate of Allentown, Pennsylvania
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The climate of Allentown, Pennsylvania is classified as a humid continental climate (Köppen Dfa). Allentown's warmest month (on average) is July with a daily average temperature of 74.7 °F (23.7 °C) and the coldest month (on average) being January with a daily average of 29.4 °F (−1.4 °C). The average precipitation of Allentown is 45.35 inches (1,152 mm) per year.
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Allentown occasionally has some severe weather, mostly thunderstorms and flooding. Winters can bring snow, with some years receiving very little of it while others seeing several major snowstorms, often Nor'easters. Winter also brings the more dangerous ice, sleet, and freezing rain, which has caused several traffic accidents over the years. Tropical storms and hurricanes occasionally survive up the coast of the Atlantic Ocean and cross into Pennsylvania. Storms such as Hurricane Ivan in 2004 and Hurricane Sandy in 2012 caused light to severe damage in Allentown and its surrounding suburbs.