| 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 6b: -5F to 0F |
| 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: | 67f - Southern Limestone/Dolomite Valleys and Low Rolling Hills |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 37681 - Limestone, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 26 | 33 | 40 | 50 | 59 | 63 | 61 | 55 | 42 | 33 | 26 | 43 |
| Avg Max Temp (°F) | 46 | 50 | 59 | 68 | 76 | 83 | 86 | 85 | 80 | 70 | 59 | 50 | 68 |
| Avg Precip (In.) | 3.55 | 3.41 | 4.14 | 3.59 | 4.61 | 4.13 | 4.73 | 3.61 | 3.22 | 2.33 | 2.98 | 3.27 | 43.59 |