Climate change in Harrison County, Texas
Since 1979, Harrison County, Texas has warmed 2.1°F, with 8 more days above 90°F, 12 more nights above 70°F and 4% more precipitation a year. Its climate in 1996–2025 is most like Trinity County, TX's was in 1951–1980.
- Average temperature: +2.1°F
- Summer highs (Jun–Aug): +0.9°F
- Winter lows (Dec–Feb): +2.7°F
- Precipitation: +4%
- Wettest day of the year: +9%
- Longest dry spell: +4 days
- Days above 90°F: +8 days
- Nights above 70°F: +12 days
- Freezing nights: −7 days
- Frost-free season: +9 days
- Muggy days: +12 days
- Summer heat index (Jun–Aug): +0.4°F
- Extreme fire-weather days: +18 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.