Kennesaw, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.6 °F (low) to 71.4 °F (high). Annual precipitation averages 53.7 Inches. Kennesaw 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 | 31.7 °F | 51.9 °F | 4.87 in. |
| February | 34.5 °F | 55.9 °F | 4.93 in. |
| March | 40.9 °F | 63.8 °F | 5.11 in. |
| April | 49.2 °F | 72.1 °F | 4.49 in. |
| May | 58.2 °F | 79.4 °F | 4.06 in. |
| June | 66.0 °F | 85.6 °F | 4.17 in. |
| July | 69.5 °F | 88.4 °F | 4.94 in. |
| August | 68.7 °F | 87.9 °F | 4.04 in. |
| September | 62.6 °F | 82.7 °F | 4.35 in. |
| October | 51.0 °F | 73.1 °F | 3.59 in. |
| November | 39.8 °F | 62.4 °F | 4.37 in. |
| December | 34.6 °F | 54.1 °F | 4.81 in. |
| Annual | 50.6 °F | 71.4 °F | 53.73 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 |