| 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: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 71e - Western Pennyroyal Karst Plain |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 37042 - Clarksville, TN | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 28 | 36 | 44 | 54 | 63 | 67 | 65 | 58 | 45 | 36 | 29 | 46 |
| Avg Max Temp (°F) | 45 | 51 | 61 | 71 | 78 | 86 | 90 | 89 | 83 | 72 | 60 | 49 | 69 |
| Avg Precip (In.) | 4.05 | 4.22 | 5.44 | 4.28 | 5.04 | 4.35 | 4.24 | 3.36 | 3.73 | 3.26 | 4.62 | 5.14 | 51.73 |