Climate change in Clarendon County, South Carolina
Since 1979, Clarendon County, South Carolina has warmed 2.2°F, with 2 fewer days above 90°F, 42 more nights above 70°F and 2% more precipitation a year. Its climate in 1996–2025 is most like Effingham County, GA's was in 1951–1980.
- Average temperature: +2.2°F
- Summer highs (Jun–Aug): −0.6°F
- Winter lows (Dec–Feb): +4.2°F
- Precipitation: +2%
- Wettest day of the year: +25%
- Longest dry spell: −2 days
- Days above 90°F: −2 days
- Nights above 70°F: +42 days
- Freezing nights: −13 days
- Frost-free season: +21 days
- Muggy days: +13 days
- Summer heat index (Jun–Aug): +0.0°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.