Climate change in Darke County, Ohio
Since 1979, Darke County, Ohio has warmed 3.1°F, with 1 fewer days above 90°F, 3 more nights above 70°F and 9% more precipitation a year. Its climate in 1996–2025 is most like Franklin County, IN's was in 1951–1980.
- Average temperature: +3.1°F
- Summer highs (Jun–Aug): +0.6°F
- Winter lows (Dec–Feb): +5.1°F
- Precipitation: +9%
- Wettest day of the year: +24%
- Longest dry spell: +0 days
- Days above 90°F: −1 days
- Nights above 70°F: +3 days
- Freezing nights: −21 days
- Frost-free season: +14 days
- Muggy days: +3 days
- Summer heat index (Jun–Aug): +0.6°F
- Extreme fire-weather days: +20 days
- Snowfall: −21%
- Snowy days (1 inch or more): −3 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.