Overview
- The National Weather Service confirmed on Tuesday that Phoenix’s March–May average was 80.2°F, surpassing the previous spring record of 77.7°F set in 1989.
- World Weather Attribution and NOAA data show March averaged about 12.5°F above normal and say the month’s extreme heat would have been virtually impossible without human-caused warming.
- Maricopa County public health officials have confirmed at least three heat-related deaths and are investigating 67 additional possible heat deaths from March through May.
- Local forecasts project a return to triple-digit highs in early June with daytime temperatures near 105–107°F and NOAA is predicting an above-normal monsoon season beginning mid-June.
- County data show mobile homes and RVs account for roughly 5% of housing but nearly 25% of recent indoor heat deaths, underscoring unequal exposure and gaps in cooling access.