Hottest and Coldest Temperatures Ever in Boston on June 29

On June 29th, Boston experienced a wide range of temperatures throughout history. The hottest temperature ever recorded was 99.0°F in 2021, while the coldest temperature dropped to 53.1°F in 2015. Typically, the average temperature on this date reaches 71.19°F, with an average high of 75.90°F and an average low of 66.48°F. Notably, in 2015, when the temperature hit its coldest point, Boston also experienced a record-breaking blizzard that dumped over two feet of snow within 24 hours, disrupting daily life and causing significant snowfall emergency measures to be implemented across the city.