Climate change in Pinal County, Arizona
Since 1979, Pinal County, Arizona has warmed 2.5°F, with 12 more days above 90°F, 33 more nights above 70°F and 34% less precipitation a year. Its climate in 1996–2025 is most like Maricopa County, AZ's was in 1951–1980.
- Average temperature: +2.5°F
- Summer highs (Jun–Aug): +1.9°F
- Winter lows (Dec–Feb): +0.3°F
- Precipitation: −34%
- Wettest day of the year: −5%
- Longest dry spell: +21 days
- Days above 90°F: +12 days
- Nights above 70°F: +33 days
- Freezing nights: −2 days
- Frost-free season: +23 days
- Muggy days: +1 days
- Summer heat index (Jun–Aug): +0.9°F
- Extreme fire-weather days: +22 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.