| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| 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: | 71g - Eastern Highland Rim |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 38449 - Ardmore, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 28 | 30 | 37 | 45 | 54 | 62 | 66 | 64 | 58 | 45 | 37 | 31 | 46 |
| Avg Max Temp (°F) | 50 | 54 | 63 | 72 | 78 | 85 | 88 | 88 | 83 | 74 | 62 | 53 | 71 |
| Avg Precip (In.) | 5.3 | 4.63 | 6.42 | 4.61 | 5.16 | 4.61 | 4.6 | 3.28 | 4.21 | 3.59 | 5.18 | 5.6 | 57.18 |