Nelson, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.9 °F (low) to 70.5 °F (high). Annual precipitation averages 56.4 Inches. Nelson 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 | 30.6 °F | 50.4 °F | 5.33 in. |
| February | 33.2 °F | 54.5 °F | 4.98 in. |
| March | 39.5 °F | 62.7 °F | 5.34 in. |
| April | 46.9 °F | 71.3 °F | 4.58 in. |
| May | 55.9 °F | 78.3 °F | 4.11 in. |
| June | 64.0 °F | 84.6 °F | 4.57 in. |
| July | 67.7 °F | 87.6 °F | 4.84 in. |
| August | 66.8 °F | 87.1 °F | 4.58 in. |
| September | 60.6 °F | 82.0 °F | 4.39 in. |
| October | 49.0 °F | 72.3 °F | 3.94 in. |
| November | 38.7 °F | 61.6 °F | 4.5 in. |
| December | 33.8 °F | 53.0 °F | 5.23 in. |
| Annual | 48.9 °F | 70.5 °F | 56.39 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 7b : 5°F to 10°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |