Hottest and Coldest Temperatures Ever in Boston on June 15

On June 15th, Boston experienced a range of temperatures. The hottest temperature ever recorded on this date was 98.1°F in 1988, while the coldest temperature ever recorded was 46.9°F in 1959. The average temperature for that day stands at 66.56°F, with an average high of 73.05°F and an average low of 60.08°F. Looking back at the shared years, it's interesting to note that in 1988, the Boston Celtics won their 16th NBA championship, led by Larry Bird who was named the Finals MVP.