Hottest and Coldest Temperatures Ever in Washington DC on May 11

On May 11th, the weather in Washington D.C. saw a mix of warm and cool temperatures. The hottest temperature ever recorded on this date was 91.0°F in 1953, while the coldest temperature was 36.0°F back in 1966. The average temperature for May 11th is 65.21°F, with an average high of 70.90°F and an average low of 59.53°F. As a fascinating news item from those years, in 1953, the iconic Polio vaccine was developed by Dr. Jonas Salk, marking a significant milestone in medical history for the prevention of this devastating disease.