Climate change in Iron County, Utah
Since 1979, Iron County, Utah has warmed 2.6°F, with 16 more days above 90°F, about the same number of nights above 70°F and 13% less precipitation a year. Its climate in 1996–2025 is most like Apache County, AZ's was in 1951–1980.
- Average temperature: +2.6°F
- Summer highs (Jun–Aug): +3.7°F
- Winter lows (Dec–Feb): +2.1°F
- Precipitation: −13%
- Wettest day of the year: +10%
- Longest dry spell: +19 days
- Days above 90°F: +16 days
- Nights above 70°F: +0 days
- Freezing nights: −14 days
- Frost-free season: +1 days
- Muggy days: +0 days
- Summer heat index (Jun–Aug): +2.8°F
- Extreme fire-weather days: +18 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.