Hottest and Coldest Temperatures Ever in Boston on July 18

On July 18th in Boston, the temperature reached a high of 98.1°F, matching the hottest temperature ever recorded in 1982. In stark contrast, the lowest temperature on record for this date was a chilly 59.0°F back in 1956. The average temperature for July 18th stands at a comfortable 75.75°F, with an average high of 80.60°F and an average low of 70.89°F. In the year that witnessed the highest temperature, 1982, an interesting event occurred: the Vietnam Veterans Memorial was dedicated in Washington, D.C., honoring the soldiers who were lost during the Vietnam War.