Chattahoochee Hills, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.3 °F (low) to 72.8 °F (high). Annual precipitation averages 53.6 Inches. Chattahoochee Hills is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.9 °F | 53.8 °F | 4.99 in. |
| February | 34.7 °F | 57.9 °F | 4.99 in. |
| March | 41.0 °F | 65.9 °F | 5.21 in. |
| April | 48.4 °F | 73.8 °F | 4.29 in. |
| May | 57.8 °F | 80.4 °F | 3.91 in. |
| June | 65.6 °F | 86.2 °F | 4.24 in. |
| July | 69.0 °F | 89.3 °F | 5.04 in. |
| August | 68.3 °F | 88.2 °F | 4.39 in. |
| September | 62.3 °F | 83.3 °F | 3.96 in. |
| October | 50.6 °F | 74.0 °F | 3.41 in. |
| November | 39.5 °F | 64.3 °F | 4.23 in. |
| December | 34.4 °F | 56.2 °F | 4.92 in. |
| Annual | 50.3 °F | 72.8 °F | 53.58 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |