Hottest and Coldest Temperatures Ever in Philadelphia on January 31

On January 31, temperatures in Philadelphia have varied significantly over the years. In 2012, the city experienced its hottest temperature ever recorded at 62.1°F, while in 2019, it reached a record low of 5.2°F. On average, this date sees a temperature of 31.10°F, with a high of 38.30°F and a low of 23.89°F. Considering these extremes, it is clear that the weather in Philadelphia on January 31 can range from relatively mild to bitterly cold. In 2012, Philadelphia faced an interesting weather phenomenon when a brief heatwave swept through, breaking temperature records across the city.