Monthly Attribution Overview March 2025

In March 2025, 178 of 191 analyzed U.S. cities were warmer than normal, with an average temperature anomaly of 3.9°F. Texas and the Southwest saw the highest frequency of days where temperatures were at least twice as likely to occur due to climate change. Wheeling, West Virginia, recorded the highest anomaly at 9°F and is the fastest-warming station for March since 1970.

• Temperature anomalies in the U.S. were widespread in March 2025, with 178 out of 191 analyzed cities recording temperatures warmer than normal. The average temperature anomaly across all cities was 3.9°F, and 75 cities (48% of stations) saw temperatures that ranked among their top 10 warmest March monthly temperatures on record.
• Climate change significantly increased the likelihood of high temperatures in Texas and the Southwest, where the most days reached a Climate Shift Index (CSI) of 2 or higher. A CSI of 2 indicates that temperatures on those days were at least twice as likely to occur because of climate change. Across the country, 28 cities experienced at least one week of days at or above a CSI of 2.
• Wheeling, West Virginia, was the most unusually hot city in March 2025 with a temperature anomaly of 9°F. It is also identified as the fastest-warming ACIS station for March, with an average increase of 11.5°F since 1970.
• Long-term warming trends are evident across the U.S., with 189 out of 191 analyzed ACIS stations showing positive temperature trends for March since 1970. Additionally, Honolulu, Hawaii, experienced its hottest March on record.
• In San Juan, Puerto Rico, 27 days in March 2025 reached a CSI of 5, meaning temperatures on those days were at least 5 times more likely to occur due to climate change.

APA

Climate Central (2025). Monthly Attribution Overview March 2025. https://www.climatecentral.org/report/monthly-attribution-overview-march-2025

Chicago

Climate Central. Monthly Attribution Overview March 2025. 2025. https://www.climatecentral.org/report/monthly-attribution-overview-march-2025.

Wikipedia

{{cite report |author=Climate Central |title=Monthly Attribution Overview March 2025 |date=3 April 2025 |url=https://www.climatecentral.org/report/monthly-attribution-overview-march-2025 |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{climatecentral2025monthly, author = {{Climate Central}}, title = {{Monthly Attribution Overview March 2025}}, institution = {Climate Central}, year = {2025}, month = apr, url = {https://www.climatecentral.org/report/monthly-attribution-overview-march-2025}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }