Clarkesville, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48 °F (low) to 70.3 °F (high). Annual precipitation averages 61.6 Inches. Clarkesville 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 | 30.4 °F | 51.3 °F | 5.6 in. |
| February | 33.0 °F | 55.1 °F | 5.13 in. |
| March | 38.4 °F | 62.4 °F | 5.6 in. |
| April | 46.0 °F | 71.0 °F | 4.69 in. |
| May | 54.8 °F | 77.7 °F | 4.53 in. |
| June | 62.8 °F | 84.1 °F | 5.23 in. |
| July | 66.3 °F | 87.3 °F | 4.95 in. |
| August | 65.6 °F | 86.0 °F | 6.03 in. |
| September | 59.8 °F | 81.0 °F | 4.58 in. |
| October | 48.1 °F | 72.0 °F | 4.45 in. |
| November | 37.8 °F | 62.0 °F | 4.94 in. |
| December | 32.9 °F | 53.9 °F | 5.85 in. |
| Annual | 48 °F | 70.3 °F | 61.58 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 |