Centenary, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.3 °C (low) to 23.6 °C (high). Annual precipitation averages 1281.4 Millimeters. Centenary is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.3 °C | 13.6 °C | 89.15 mm |
| February | 2.4 °C | 15.4 °C | 86.36 mm |
| March | 5.6 °C | 19.4 °C | 91.44 mm |
| April | 10.2 °C | 24.2 °C | 85.34 mm |
| May | 15.2 °C | 27.7 °C | 99.31 mm |
| June | 19.8 °C | 31 °C | 127.25 mm |
| July | 21.8 °C | 32.3 °C | 135.38 mm |
| August | 21.1 °C | 31.7 °C | 151.89 mm |
| September | 18 °C | 28.6 °C | 148.84 mm |
| October | 11.4 °C | 24.4 °C | 90.17 mm |
| November | 5.6 °C | 19.2 °C | 81.03 mm |
| December | 2.7 °C | 15.1 °C | 95.25 mm |
| Annual | 11.3 °C | 23.6 °C | 1281.41 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |