New Johnsonville, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.9 °F (low) to 70 °F (high). Annual precipitation averages 53.1 Inches. New Johnsonville 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 | 27.8 °F | 47.2 °F | 4.18 in. |
| February | 30.7 °F | 52.2 °F | 4.47 in. |
| March | 38.1 °F | 61.3 °F | 5.22 in. |
| April | 46.8 °F | 71.2 °F | 5.0 in. |
| May | 56.5 °F | 78.5 °F | 5.54 in. |
| June | 64.7 °F | 85.6 °F | 4.05 in. |
| July | 68.4 °F | 88.8 °F | 3.91 in. |
| August | 66.6 °F | 88.7 °F | 3.75 in. |
| September | 59.5 °F | 83.1 °F | 3.77 in. |
| October | 47.5 °F | 72.5 °F | 3.84 in. |
| November | 37.2 °F | 60.4 °F | 4.18 in. |
| December | 31.1 °F | 50.2 °F | 5.17 in. |
| Annual | 47.9 °F | 70 °F | 53.08 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 |