Hottest and Coldest Temperatures Ever in Boston on April 21

On April 21st, Boston experienced a range of temperatures throughout history. In 1957, the city reached a scorching 88.0°F, marking the hottest temperature ever recorded on this date, while 1981 saw a chilly low of 32.0°F, the coldest ever. The typical weather for April 21st in Boston is an average temperature of 51.51°F, with highs averaging 57.10°F and lows around 45.92°F. Adding an interesting historical tidbit, in 1957, Elvis Presley's hit song "All Shook Up" topped the charts, bringing his rock 'n' roll sound to the masses.