| 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: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| 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 37138 - Old Hickory, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 27 | 30 | 38 | 46 | 55 | 64 | 68 | 66 | 59 | 47 | 38 | 30 | 47 |
| Avg Max Temp (°F) | 46 | 51 | 61 | 70 | 78 | 86 | 89 | 88 | 82 | 72 | 60 | 50 | 69 |
| Avg Precip (In.) | 3.94 | 3.92 | 5.02 | 3.85 | 5.19 | 4.31 | 3.79 | 3.07 | 3.77 | 3.09 | 4.4 | 5.01 | 49.36 |