2024 Spring Package

Since 1970, spring temperatures in the contiguous U.S. have increased by an average of 2°F, with the most significant warming occurring in the Southwest. Analysis of 239 locations shows that 96% of cities experienced warming, with some locations in Nevada, Texas, and Arizona exceeding 6°F. This trend is characterized by an increase in warmer-than-normal spring days, which contributes to earlier snowmelt, prolonged allergy seasons, and extended agricultural growing seasons.

• Between 1970 and 2023, average spring temperatures increased in 229 of the 239 analyzed U.S. locations (96%), with an average warming of 2.2°F across those cities. Over half of the locations (54%) saw spring temperatures rise by 2°F or more.
• The Southwest region experienced the highest average spring warming at 3.3°F. Specific cities with the highest warming include Reno, Nevada (6.8°F), El Paso, Texas (6.3°F), Las Vegas, Nevada (6.2°F), Tucson, Arizona (6°F), and Phoenix, Arizona (5.3°F).
• There has been a significant increase in the frequency of warmer-than-normal spring days (relative to the 1991-2020 normal). Since 1970, 96% of analyzed locations saw an increase, and 73% now experience at least seven more such days. The highest average increase was in the Southwest with 18 additional days.
• Spring warming has several environmental and health consequences: it causes earlier snowmelt that stresses water resources and hydropower in the West; extends the duration of seasonal allergies by delaying the first frost; expands the season for disease-carrying pests like mosquitoes; and shifts agricultural planting zones and growing seasons.

APA

Climate Central (2024). 2024 Spring Package. https://www.climatecentral.org/climate-matters/2024-spring-package

Chicago

Climate Central. 2024 Spring Package. 2024. https://www.climatecentral.org/climate-matters/2024-spring-package.

Wikipedia

{{cite report |author=Climate Central |title=2024 Spring Package |date=28 February 2024 |url=https://www.climatecentral.org/climate-matters/2024-spring-package |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{climatecentral20242024, author = {{Climate Central}}, title = {{2024 Spring Package}}, institution = {Climate Central}, year = {2024}, month = feb, url = {https://www.climatecentral.org/climate-matters/2024-spring-package}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }