Climate change in Delaware County, Oklahoma
Since 1979, Delaware County, Oklahoma has warmed 2.1°F, with 7 more days above 90°F, 7 more nights above 70°F and 15% more precipitation a year. Its climate in 1996–2025 is most like Cherokee County, OK's was in 1951–1980.
- Average temperature: +2.1°F
- Summer highs (Jun–Aug): +0.7°F
- Winter lows (Dec–Feb): +3.1°F
- Precipitation: +15%
- Wettest day of the year: +8%
- Longest dry spell: +1 days
- Days above 90°F: +7 days
- Nights above 70°F: +7 days
- Freezing nights: −12 days
- Frost-free season: +2 days
- Muggy days: +14 days
- Summer heat index (Jun–Aug): +2.3°F
- Extreme fire-weather days: +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.