| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 68b - Sequatchie Valley |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 37397 - Whitwell, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 28 | 31 | 38 | 45 | 54 | 62 | 67 | 65 | 59 | 46 | 38 | 31 | 47 |
| Avg Max Temp (°F) | 48 | 53 | 62 | 71 | 78 | 85 | 88 | 87 | 81 | 71 | 61 | 51 | 70 |
| Avg Precip (In.) | 5.25 | 4.67 | 6.03 | 4.1 | 4.25 | 3.98 | 4.18 | 3.38 | 4.39 | 3.27 | 4.74 | 5.06 | 53.3 |