Chamblee, 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 54.9 Inches. Chamblee 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 | 31.6 °F | 51.8 °F | 4.76 in. |
| February | 34.5 °F | 55.9 °F | 4.96 in. |
| March | 41.0 °F | 63.8 °F | 5.32 in. |
| April | 48.9 °F | 71.9 °F | 4.32 in. |
| May | 58.2 °F | 79.3 °F | 3.93 in. |
| June | 66.1 °F | 85.6 °F | 4.57 in. |
| July | 69.5 °F | 88.3 °F | 5.23 in. |
| August | 68.7 °F | 87.7 °F | 4.41 in. |
| September | 62.6 °F | 82.4 °F | 4.32 in. |
| October | 51.1 °F | 72.8 °F | 3.88 in. |
| November | 40.0 °F | 62.6 °F | 4.39 in. |
| December | 34.8 °F | 54.4 °F | 4.8 in. |
| Annual | 50.6 °F | 71.4 °F | 54.89 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |