Climate change in Marion County, Tennessee
Since 1979, Marion County, Tennessee has warmed 2.5°F, with 6 fewer days above 90°F, 9 more nights above 70°F and 10% more precipitation a year. Its climate in 1996–2025 is most like Greenville County, SC's was in 1951–1980.
- Average temperature: +2.5°F
- Summer highs (Jun–Aug): −0.1°F
- Winter lows (Dec–Feb): +4.8°F
- Precipitation: +10%
- Wettest day of the year: −4%
- Longest dry spell: −1 days
- Days above 90°F: −6 days
- Nights above 70°F: +9 days
- Freezing nights: −19 days
- Frost-free season: +24 days
- Muggy days: +6 days
- Summer heat index (Jun–Aug): −0.6°F
- Extreme fire-weather days: +14 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.