Palmersville, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.9 °F (low) to 68.7 °F (high). Annual precipitation averages 54.1 Inches. Palmersville is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.3 °F | 45.1 °F | 4.07 in. |
| February | 30.0 °F | 49.6 °F | 4.4 in. |
| March | 37.9 °F | 59.3 °F | 5.08 in. |
| April | 47.4 °F | 69.7 °F | 5.24 in. |
| May | 57.3 °F | 78.0 °F | 5.75 in. |
| June | 65.4 °F | 85.3 °F | 4.63 in. |
| July | 68.8 °F | 88.3 °F | 4.27 in. |
| August | 66.7 °F | 88.2 °F | 3.39 in. |
| September | 59.2 °F | 82.3 °F | 3.8 in. |
| October | 47.4 °F | 71.3 °F | 3.81 in. |
| November | 37.4 °F | 58.7 °F | 4.47 in. |
| December | 30.4 °F | 48.3 °F | 5.16 in. |
| Annual | 47.9 °F | 68.7 °F | 54.07 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |