Cornelia, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.8 °F (low) to 69.1 °F (high). Annual precipitation averages 58.9 Inches. Cornelia 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 | 31.0 °F | 50.1 °F | 5.44 in. |
| February | 33.9 °F | 53.7 °F | 5.04 in. |
| March | 39.4 °F | 61.1 °F | 5.55 in. |
| April | 47.2 °F | 69.8 °F | 4.42 in. |
| May | 55.5 °F | 76.5 °F | 3.94 in. |
| June | 63.3 °F | 82.8 °F | 5.11 in. |
| July | 66.7 °F | 86.0 °F | 4.93 in. |
| August | 65.9 °F | 84.7 °F | 5.52 in. |
| September | 60.1 °F | 79.9 °F | 4.35 in. |
| October | 49.2 °F | 71.0 °F | 4.65 in. |
| November | 39.3 °F | 60.9 °F | 4.46 in. |
| December | 34.1 °F | 52.8 °F | 5.52 in. |
| Annual | 48.8 °F | 69.1 °F | 58.93 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 |