Savannah, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.1 °F (low) to 71.7 °F (high). Annual precipitation averages 55.9 Inches. Savannah is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.5 °F | 49.5 °F | 4.74 in. |
| February | 32.7 °F | 54.5 °F | 5.02 in. |
| March | 39.4 °F | 63.2 °F | 5.17 in. |
| April | 47.8 °F | 72.7 °F | 5.48 in. |
| May | 57.7 °F | 80.3 °F | 5.51 in. |
| June | 65.7 °F | 87.3 °F | 4.51 in. |
| July | 69.0 °F | 90.2 °F | 4.54 in. |
| August | 67.4 °F | 89.8 °F | 3.8 in. |
| September | 60.5 °F | 84.7 °F | 3.61 in. |
| October | 48.4 °F | 74.4 °F | 3.85 in. |
| November | 38.0 °F | 62.1 °F | 4.21 in. |
| December | 32.5 °F | 52.2 °F | 5.42 in. |
| Annual | 49.1 °F | 71.7 °F | 55.86 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |