Climate change in Cimarron County, Oklahoma
Since 1979, Cimarron County, Oklahoma has warmed 1.9°F, with 18 more days above 90°F, about the same number of nights above 70°F and 10% less precipitation a year. Its climate in 1996–2025 is most like Hartley County, TX's was in 1951–1980.
- Average temperature: +1.9°F
- Summer highs (Jun–Aug): +2.3°F
- Winter lows (Dec–Feb): −0.0°F
- Precipitation: −10%
- Wettest day of the year: −7%
- Longest dry spell: +6 days
- Days above 90°F: +18 days
- Nights above 70°F: +0 days
- Freezing nights: −1 days
- Frost-free season: +14 days
- Muggy days: +1 days
- Summer heat index (Jun–Aug): +2.1°F
- Extreme fire-weather days: +33 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.