| 2023 Hardiness Zone: | 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 |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| 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 37727 - Del Rio, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 28 | 35 | 42 | 51 | 59 | 64 | 63 | 56 | 43 | 35 | 28 | 44 |
| Avg Max Temp (°F) | 47 | 51 | 60 | 70 | 77 | 84 | 87 | 86 | 80 | 70 | 60 | 50 | 69 |
| Avg Precip (In.) | 3.37 | 3.53 | 4.4 | 3.73 | 4.59 | 4.04 | 4.68 | 3.76 | 3.34 | 2.4 | 3.12 | 3.41 | 44.36 |