Fall Warming Trends Across the U.S.

This article discusses how weather is warming up across the US for the Fall season.

Happy meteorological fall! This week, we examined the trends in average fall temperature across the U.S. Of the 244 cities analyzed, 80 percent have warmed at least 1°F in the last half-century, compared to only 1 percent which have cooled 1°F or more. The warming has been especially pronounced recently, as the last three falls have been within the 10 warmest on record in the U.S., and the two warmest came in 2015 and 2016.

Methodology: National trends in fall temperatures are from NOAA/NCEI Climate at a Glance for September through November. Individual city temperature trends are calculated using data from the Applied Climate Information System for the same period. Displayed trend lines on city analyses are based on a mathematical linear regression.

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