| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F Zone 5b: -15°F to -10°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: | 66e - Southern Sedimentary Ridges |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 37722 - Cosby, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 28 | 35 | 42 | 52 | 60 | 64 | 63 | 56 | 44 | 35 | 28 | 45 |
| Avg Max Temp (°F) | 47 | 52 | 61 | 70 | 77 | 83 | 87 | 86 | 80 | 70 | 60 | 50 | 68 |
| Avg Precip (In.) | 3.84 | 3.64 | 4.52 | 3.81 | 4.79 | 4.35 | 4.76 | 3.81 | 3.46 | 2.4 | 3.18 | 3.61 | 46.17 |