2022 Fall Package

Since 1970, fall temperatures in the contiguous U.S. have increased by an average of 2.7 °F, with warming observed in 97% of 245 analyzed cities. The most significant warming occurred in Nevada, Texas, and Arizona, with Reno, Nevada, recording the highest increase at 7.7 °F. This trend has led to a higher frequency of above-normal fall days, affecting 74% of analyzed cities. These temperature shifts extend health risks from extreme heat, prolong pollen and wildfire seasons, allow disease-carrying insects to persist longer, and disrupt ecological events such as bird migrations and fruit ripening.

• Average fall temperatures across the contiguous U.S. have risen by 2.7 °F since 1970, with more pronounced warming in the Northeast, upper Midwest, and western U.S.
• Analysis of 245 U.S. cities shows that 97% (238 cities) have experienced fall warming since 1970, with 139 of those cities warming by 2 °F or more.
• The highest levels of fall warming exceeded 5 °F in Arizona, Texas, and Nevada, specifically in Reno (+7.7 °F), Las Vegas (6.2 °F), El Paso (5.8 °F), Tucson (5.5 °F), and Phoenix (5.3 °F).
• The number of fall days with above-normal temperatures has increased for 74% (182) of the analyzed cities, with 11 locations seeing an increase of 30 or more days; Reno recorded the highest increase with 44 additional above-normal days.
• Warmer falls create a range of risks, including extended heat-related illness for vulnerable populations, longer pollen and wildfire seasons, increased persistence of mosquitoes and ticks, and disruptions to bird migrations, hibernation, and fruit ripening.

APA

Gallinat, A., & Sánchez-Lugo, A. (2022). 2022 Fall Package. Climate Central. https://www.climatecentral.org/climate-matters/2022-fall-package

Chicago

Gallinat, Amanda, and Ahira Sánchez-Lugo. 2022 Fall Package. Climate Central, 2022. https://www.climatecentral.org/climate-matters/2022-fall-package.

Wikipedia

{{cite report |last1=Gallinat |first1=Amanda |last2=Sánchez-Lugo |first2=Ahira |title=2022 Fall Package |publisher=Climate Central |date=31 August 2022 |url=https://www.climatecentral.org/climate-matters/2022-fall-package |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{gallinat20222022, author = {Gallinat, Amanda and Sánchez-Lugo, Ahira}, title = {{2022 Fall Package}}, institution = {Climate Central}, year = {2022}, month = aug, url = {https://www.climatecentral.org/climate-matters/2022-fall-package}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }