Climate change in Shelby County, Texas
Since 1979, Shelby County, Texas has warmed 2.4°F, with 6 more days above 90°F, 30 more nights above 70°F and 7% more precipitation a year. Its climate in 1996–2025 is most like Polk County, TX's was in 1951–1980.
- Average temperature: +2.4°F
- Summer highs (Jun–Aug): +0.6°F
- Winter lows (Dec–Feb): +3.1°F
- Precipitation: +7%
- Wettest day of the year: +18%
- Longest dry spell: +4 days
- Days above 90°F: +6 days
- Nights above 70°F: +30 days
- Freezing nights: −13 days
- Frost-free season: +14 days
- Muggy days: +13 days
- Summer heat index (Jun–Aug): −0.1°F
- Extreme fire-weather days: +17 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.