Hottest and Coldest Temperatures Ever in Boston on March 23

On March 23rd in Boston, the temperature ranges between a historical high of 75.9°F in 2012 and a low of 18.0°F in 1959. The average temperature for this date is 39.77°F, with an average high of 45.09°F and an average low of 34.46°F. In 1959, when the coldest temperature was recorded, Jonas Salk's polio vaccine was introduced to the public, marking a significant breakthrough in medical history and paving the way for the eventual eradication of the disease.