Lake Secession, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.1 °F (low) to 73.1 °F (high). Annual precipitation averages 48.2 Inches. Lake Secession 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.5 °F | 53.9 °F | 4.31 in. |
| February | 33.9 °F | 57.7 °F | 4.2 in. |
| March | 39.9 °F | 65.3 °F | 4.67 in. |
| April | 48.2 °F | 73.8 °F | 3.48 in. |
| May | 57.5 °F | 80.9 °F | 3.33 in. |
| June | 65.9 °F | 87.4 °F | 4.46 in. |
| July | 69.6 °F | 90.8 °F | 3.95 in. |
| August | 68.8 °F | 89.0 °F | 4.06 in. |
| September | 62.6 °F | 83.8 °F | 3.67 in. |
| October | 50.1 °F | 74.0 °F | 3.26 in. |
| November | 38.9 °F | 64.2 °F | 4.02 in. |
| December | 33.7 °F | 56.2 °F | 4.74 in. |
| Annual | 50.1 °F | 73.1 °F | 48.15 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 |