Hottest and Coldest Temperatures Ever in Boston on September 25

On September 25th in Boston, the weather showcased a wide temperature range, with the 1970 record high of 88.0°F and the 1950 record low of 37.9°F. The average temperature for this date is 61.27°F, with a high average of 65.67°F and a low average of 56.87°F. Despite the significant variations, Bostonians experienced relatively moderate conditions. In 1970, Boston's news reported a unique event where a local artist installed a large-scale outdoor artwork that incorporated temperature-sensitive materials, changing its appearance with the temperature fluctuations throughout the day, captivating the passersby with its dynamic nature.