Climate change in Buchanan County, Iowa
Since 1979, Buchanan County, Iowa has warmed 1.9°F, with 1 fewer days above 90°F, about the same number of nights above 70°F and 6% more precipitation a year. Its climate in 1996–2025 is most like Jones County, IA's was in 1951–1980.
- Average temperature: +1.9°F
- Summer highs (Jun–Aug): +0.6°F
- Winter lows (Dec–Feb): +2.7°F
- Precipitation: +6%
- Wettest day of the year: +21%
- Longest dry spell: −2 days
- Days above 90°F: −1 days
- Nights above 70°F: −0 days
- Freezing nights: −2 days
- Frost-free season: +5 days
- Muggy days: +4 days
- Summer heat index (Jun–Aug): +1.1°F
- Extreme fire-weather days: +16 days
- Snowfall: +9%
- Snowy days (1 inch or more): −0 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.