Summer heat is invading the fall season. Of the 242 cities analyzed, 95% (230) experienced an increase in their average fall temperatures since 1970. A little more than half (120 of 230) of those cities saw an increase of over 2℉.
Our analysis shows that 64% (155) of 242 cities had at least seven additional days above their normal fall temperatures since 1970, with eight cities reporting more than 30 additional days.
Higher cooling demands and a longer mosquito and tick season creep later into the year as climate change heats up autumn across the country. Additionally, allergy sufferers will endure an extended pollen season—a direct result of delayed cooler fall temperatures prolonging the growing season.