Trenton, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51 °F (low) to 74.8 °F (high). Annual precipitation averages 46.9 Inches. Trenton is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.4 °F | 55.6 °F | 4.18 in. |
| February | 35.3 °F | 59.2 °F | 3.72 in. |
| March | 41.3 °F | 66.8 °F | 4.4 in. |
| April | 49.5 °F | 75.3 °F | 3.23 in. |
| May | 58.3 °F | 83.0 °F | 3.12 in. |
| June | 65.8 °F | 89.4 °F | 4.73 in. |
| July | 69.3 °F | 92.5 °F | 4.32 in. |
| August | 68.2 °F | 90.8 °F | 4.82 in. |
| September | 62.9 °F | 85.0 °F | 3.91 in. |
| October | 51.0 °F | 76.2 °F | 3.03 in. |
| November | 41.1 °F | 65.7 °F | 3.29 in. |
| December | 35.9 °F | 57.6 °F | 4.17 in. |
| Annual | 51 °F | 74.8 °F | 46.92 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |