Climate change in Iron County, Missouri
Since 1979, Iron County, Missouri has warmed 2.3°F, with 1 more days above 90°F, 4 more nights above 70°F and 5% more precipitation a year. Its climate in 1996–2025 is most like Howell County, MO's was in 1951–1980.
- Average temperature: +2.3°F
- Summer highs (Jun–Aug): −0.2°F
- Winter lows (Dec–Feb): +4.2°F
- Precipitation: +5%
- Wettest day of the year: +17%
- Longest dry spell: −1 days
- Days above 90°F: +1 days
- Nights above 70°F: +4 days
- Freezing nights: −20 days
- Frost-free season: +31 days
- Muggy days: +15 days
- Summer heat index (Jun–Aug): +1.2°F
- Extreme fire-weather days: +4 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.