Climate change in Hemphill County, Texas
Since 1979, Hemphill County, Texas has warmed 2.9°F, with 18 more days above 90°F, 13 more nights above 70°F and 1% less precipitation a year. Its climate in 1996–2025 is most like Donley County, TX's was in 1951–1980.
- Average temperature: +2.9°F
- Summer highs (Jun–Aug): +2.4°F
- Winter lows (Dec–Feb): +1.7°F
- Precipitation: −1%
- Wettest day of the year: −4%
- Longest dry spell: −2 days
- Days above 90°F: +18 days
- Nights above 70°F: +13 days
- Freezing nights: −7 days
- Frost-free season: +6 days
- Muggy days: +7 days
- Summer heat index (Jun–Aug): +2.5°F
- Extreme fire-weather days: +23 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.