Sylvania, Georgia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.6 °F (low) to 76.8 °F (high). Annual precipitation averages 48.2 Inches. Sylvania 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 | 35.8 °F | 59.7 °F | 3.88 in. |
| February | 38.4 °F | 63.2 °F | 3.71 in. |
| March | 44.2 °F | 70.1 °F | 3.78 in. |
| April | 51.5 °F | 77.4 °F | 3.0 in. |
| May | 60.3 °F | 84.1 °F | 3.12 in. |
| June | 68.3 °F | 89.6 °F | 5.89 in. |
| July | 71.4 °F | 92.0 °F | 5.16 in. |
| August | 70.9 °F | 90.4 °F | 6.15 in. |
| September | 65.8 °F | 86.2 °F | 3.9 in. |
| October | 54.5 °F | 78.4 °F | 2.97 in. |
| November | 43.4 °F | 68.5 °F | 2.87 in. |
| December | 38.1 °F | 61.6 °F | 3.78 in. |
| Annual | 53.6 °F | 76.8 °F | 48.21 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 | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |