| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 71f - Western Highland Rim |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 37134 - New Johnsonville, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 27 | 35 | 44 | 54 | 62 | 67 | 64 | 56 | 44 | 35 | 28 | 45 |
| Avg Max Temp (°F) | 46 | 52 | 61 | 71 | 79 | 86 | 89 | 89 | 83 | 72 | 60 | 50 | 70 |
| Avg Precip (In.) | 4.36 | 4.59 | 5.76 | 4.72 | 5.59 | 4.68 | 4.56 | 3.67 | 4.09 | 3.32 | 5.03 | 5.32 | 55.71 |