Climate change in Harper County, Oklahoma
Since 1979, Harper County, Oklahoma has warmed 2.5°F, with 11 more days above 90°F, 6 more nights above 70°F and 13% less precipitation a year. Its climate in 1996–2025 is most like Woodward County, OK's was in 1951–1980.
- Average temperature: +2.5°F
- Summer highs (Jun–Aug): +1.3°F
- Winter lows (Dec–Feb): +1.9°F
- Precipitation: −13%
- Wettest day of the year: +3%
- Longest dry spell: +5 days
- Days above 90°F: +11 days
- Nights above 70°F: +6 days
- Freezing nights: −4 days
- Frost-free season: +1 days
- Muggy days: +17 days
- Summer heat index (Jun–Aug): +2.1°F
- Extreme fire-weather days: +24 days
- Snowfall: −24%
- Snowy days (1 inch or more): −1 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.