| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| 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: | 67g - Southern Shale Valleys |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 37843 - Parrottsville, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 27 | 34 | 42 | 51 | 60 | 64 | 63 | 56 | 42 | 34 | 27 | 44 |
| Avg Max Temp (°F) | 47 | 52 | 61 | 70 | 77 | 84 | 87 | 86 | 81 | 70 | 60 | 50 | 69 |
| Avg Precip (In.) | 3.84 | 3.57 | 4.41 | 3.71 | 4.75 | 4.02 | 4.56 | 3.75 | 3.26 | 2.34 | 3.2 | 3.67 | 45.09 |