Eureka Mill, South Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.5 °F (low) to 72.8 °F (high). Annual precipitation averages 45.5 Inches. Eureka Mill is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.8 °F | 53.2 °F | 4.03 in. |
| February | 33.2 °F | 57.1 °F | 3.36 in. |
| March | 39.3 °F | 64.8 °F | 4.14 in. |
| April | 47.7 °F | 73.9 °F | 3.74 in. |
| May | 57.1 °F | 80.8 °F | 3.37 in. |
| June | 65.5 °F | 87.4 °F | 4.3 in. |
| July | 69.1 °F | 90.7 °F | 4.05 in. |
| August | 68.1 °F | 88.9 °F | 4.33 in. |
| September | 61.9 °F | 83.5 °F | 3.83 in. |
| October | 49.4 °F | 73.6 °F | 2.99 in. |
| November | 38.5 °F | 63.5 °F | 3.36 in. |
| December | 33.3 °F | 55.6 °F | 3.99 in. |
| Annual | 49.5 °F | 72.8 °F | 45.49 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |