| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 68a - Cumberland Plateau |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 37872 - Sunbright, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 27 | 35 | 42 | 51 | 59 | 64 | 62 | 55 | 43 | 35 | 28 | 44 |
| Avg Max Temp (°F) | 44 | 49 | 58 | 68 | 75 | 82 | 85 | 84 | 78 | 69 | 58 | 48 | 66 |
| Avg Precip (In.) | 5.01 | 4.3 | 5.59 | 4.32 | 5.48 | 4.89 | 4.96 | 4.3 | 3.82 | 3.42 | 4.71 | 5.05 | 55.85 |