Keysville, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52.3 °F (low) to 76.1 °F (high). Annual precipitation averages 46.6 Inches. Keysville is located in USDA Plant Hardiness Zone 8b. 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 | 34.4 °F | 57.7 °F | 4.17 in. |
| February | 37.0 °F | 61.2 °F | 4.0 in. |
| March | 43.2 °F | 68.9 °F | 4.35 in. |
| April | 50.4 °F | 76.8 °F | 3.2 in. |
| May | 59.3 °F | 84.0 °F | 3.14 in. |
| June | 67.4 °F | 89.6 °F | 4.72 in. |
| July | 70.6 °F | 92.5 °F | 4.59 in. |
| August | 70.1 °F | 91.1 °F | 4.63 in. |
| September | 64.5 °F | 86.5 °F | 3.77 in. |
| October | 52.8 °F | 77.6 °F | 2.83 in. |
| November | 41.7 °F | 67.5 °F | 3.03 in. |
| December | 36.7 °F | 60.0 °F | 4.16 in. |
| Annual | 52.3 °F | 76.1 °F | 46.59 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |