Gainesville, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.6 °F (low) to 70.2 °F (high). Annual precipitation averages 55.9 Inches. Gainesville 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.3 °F | 50.9 °F | 5.29 in. |
| February | 34.0 °F | 54.7 °F | 5.13 in. |
| March | 40.0 °F | 62.4 °F | 5.33 in. |
| April | 47.8 °F | 70.8 °F | 4.27 in. |
| May | 56.6 °F | 77.6 °F | 4.2 in. |
| June | 64.7 °F | 84.3 °F | 4.45 in. |
| July | 68.2 °F | 87.2 °F | 4.17 in. |
| August | 67.4 °F | 86.3 °F | 5.19 in. |
| September | 61.5 °F | 81.1 °F | 4.26 in. |
| October | 50.1 °F | 71.9 °F | 4.09 in. |
| November | 39.7 °F | 62.0 °F | 4.37 in. |
| December | 34.2 °F | 53.5 °F | 5.18 in. |
| Annual | 49.6 °F | 70.2 °F | 55.93 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| 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 |