Heat — Upper Santa Cruz River and Altar Valleys, Arizona

2025-07-13 · Upper Santa Cruz River and Altar Valleys, Arizona

Event narrative

High temperatures in Southeastern Arizona were 4 degrees above normal, causing Minor HeatRisk. The Tucson International Airport reached a high temperature of 99 degrees Fahrenheit. The Pima County Medical Examiner found that heat was a factor in the cause of death for an individual in Rio Rico and was heat contributed.

Wider weather episode

Temperatures in Southeastern Arizona were 3 to 6 degrees above normal, causing Low to Moderate HeatRisk. The Pima County Medical Examiner found that heat was a factor in the cause of death for 11 individuals. 9 of these deaths were due to heat contribution in Willcox, Tucson, and Rio Rico, while 2 were heat caused in Tucson.

Source: NOAA Storm Events Database, event_id 1285759. Narrative written by the NWS forecast office that issued the report.