| 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 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: | 68a - Cumberland Plateau |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 38574 - Monterey, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 28 | 36 | 43 | 52 | 60 | 64 | 62 | 56 | 44 | 36 | 29 | 45 |
| Avg Max Temp (°F) | 45 | 50 | 59 | 68 | 75 | 82 | 86 | 85 | 79 | 69 | 58 | 49 | 67 |
| Avg Precip (In.) | 5.86 | 4.62 | 6.22 | 4.77 | 5.81 | 4.82 | 4.73 | 4.64 | 4.16 | 3.79 | 5.32 | 6 | 60.73 |