Hottest and Coldest Temperatures Ever in Philadelphia on February 15

On February 15th in Philadelphia, weather records show contrasting extremes from the past. In 1954, the city experienced its hottest temperature ever recorded at 72.0°F, while in 1987, it faced its coldest temperature of 9.0°F. The average temperature for this date stands at 34.94°F, with an average high temperature of 42.01°F and an average low temperature of 27.87°F. An intriguing news item from the given years is that in 1954, the first mass polio vaccine was developed by Dr. Jonas Salk, leading to a significant breakthrough in combating the disease and saving countless lives.