| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | 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. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 71f - Western Highland Rim | |
| Current Drought Status: | Severe Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 37137 - Nunnelly, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 28 | 36 | 44 | 54 | 62 | 66 | 65 | 58 | 45 | 36 | 29 | 46 |
| Avg Max Temp (°F) | 47 | 53 | 63 | 72 | 79 | 86 | 89 | 88 | 82 | 73 | 61 | 51 | 70 |
| Avg Precip (In.) | 4.36 | 4.37 | 5.7 | 4.68 | 5.6 | 4.4 | 4.59 | 3.15 | 3.97 | 3.34 | 5.08 | 5.4 | 54.63 |