Hottest and Coldest Temperatures Ever in Philadelphia on May 11

On May 11th in Philadelphia, the weather displayed notable variations over the years. In 1953, temperatures reached a scorching 90.0°F, marking the highest recorded temperature for this date. Conversely, in 1966, the coldest temperature ever recorded dipped to 28.0°F. On average, May 11th has a temperature of 62.40°F, with an average high of 68.04°F and an average low of 56.77°F. Interesting to note, in 1953, the year with the record high, the United States announced the successful ascent of Mount Everest by Sir Edmund Hillary and Tenzing Norgay, captivating global attention with their remarkable achievement.