| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | 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. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 71h - Outer Nashville Basin |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 37067 - Franklin, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 28 | 36 | 44 | 53 | 61 | 66 | 64 | 57 | 44 | 36 | 29 | 45 |
| Avg Max Temp (°F) | 46 | 51 | 60 | 70 | 77 | 85 | 89 | 88 | 82 | 72 | 60 | 50 | 69 |
| Avg Precip (In.) | 4.45 | 4.2 | 5.71 | 4.35 | 5.57 | 4.19 | 4.57 | 3.57 | 3.97 | 3.32 | 4.92 | 5.37 | 54.21 |