Climate change in Calhoun County, South Carolina
Since 1979, Calhoun County, South Carolina has warmed 2.3°F, with 1 more days above 90°F, 43 more nights above 70°F and 7% more precipitation a year. Its climate in 1996–2025 is most like Effingham County, GA's was in 1951–1980.
- Average temperature: +2.3°F
- Summer highs (Jun–Aug): −0.5°F
- Winter lows (Dec–Feb): +4.4°F
- Precipitation: +7%
- Wettest day of the year: +11%
- Longest dry spell: +0 days
- Days above 90°F: +1 days
- Nights above 70°F: +43 days
- Freezing nights: −16 days
- Frost-free season: +21 days
- Muggy days: +14 days
- Summer heat index (Jun–Aug): −0.7°F
- Extreme fire-weather days: −8 days
Changes follow the trend line through every year from 1979 to 2025. Data: NOAA nClimGrid-Daily; humidity from gridMET, adjusted to airport observations.