Hottest and Coldest Temperatures Ever in Boston on May 18

On May 18th in Boston, the weather history presents a wide range of temperatures. In 2017, the city experienced its hottest recorded temperature, reaching 95.0°F, while in 2002, it dipped to its coldest temperature ever at 37.0°F. On average, the temperature on this date rests at 57.20°F, with the high at 62.26°F and the low at 52.13°F. Notably, in 2002, a fascinating event occurred as Boston experienced an unseasonably cold day for May, setting a new record low temperature that challenged expectations for spring weather.