| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°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: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 71f - Western Highland Rim |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 38469 - Loretto, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 28 | 30 | 38 | 46 | 54 | 62 | 66 | 65 | 58 | 46 | 37 | 31 | 47 |
| Avg Max Temp (°F) | 48 | 53 | 62 | 71 | 78 | 85 | 89 | 88 | 82 | 72 | 61 | 51 | 70 |
| Avg Precip (In.) | 5.24 | 4.6 | 6.39 | 4.73 | 5.65 | 4.43 | 4.77 | 3.39 | 4.28 | 3.52 | 5.34 | 5.71 | 58.07 |