Newton, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.5 °F (low) to 78.2 °F (high). Annual precipitation averages 52.4 Inches. Newton is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 36.8 °F | 61.5 °F | 4.84 in. |
| February | 39.8 °F | 64.9 °F | 4.62 in. |
| March | 45.6 °F | 71.9 °F | 5.14 in. |
| April | 52.9 °F | 78.7 °F | 4.06 in. |
| May | 61.6 °F | 85.8 °F | 2.77 in. |
| June | 68.9 °F | 89.9 °F | 5.38 in. |
| July | 71.6 °F | 91.9 °F | 5.55 in. |
| August | 70.9 °F | 91.2 °F | 5.13 in. |
| September | 66.3 °F | 87.9 °F | 4.18 in. |
| October | 55.4 °F | 80.5 °F | 2.8 in. |
| November | 44.3 °F | 71.0 °F | 3.31 in. |
| December | 39.7 °F | 63.5 °F | 4.59 in. |
| Annual | 54.5 °F | 78.2 °F | 52.37 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |