| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | October 21 - 31 | |
| Average Last Frost Date: | April 11 - 20 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 71i - Inner Nashville Basin | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 37122 - Mount Juliet, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 28 | 37 | 45 | 54 | 63 | 67 | 65 | 58 | 45 | 37 | 29 | 46 |
| Avg Max Temp (°F) | 46 | 51 | 61 | 70 | 78 | 86 | 89 | 88 | 82 | 72 | 60 | 50 | 69 |
| Avg Precip (In.) | 4.19 | 4.03 | 5.26 | 4.08 | 5.27 | 4.39 | 4.16 | 3.54 | 3.86 | 3.2 | 4.53 | 5.09 | 51.61 |