Franklin, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.2 °F (low) to 69.7 °F (high). Annual precipitation averages 53.7 Inches. Franklin is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.8 °F | 47.1 °F | 4.37 in. |
| February | 30.4 °F | 51.7 °F | 4.67 in. |
| March | 37.1 °F | 60.6 °F | 5.13 in. |
| April | 45.6 °F | 70.5 °F | 5.01 in. |
| May | 55.2 °F | 78.3 °F | 5.21 in. |
| June | 64.0 °F | 85.7 °F | 4.46 in. |
| July | 67.7 °F | 89.0 °F | 4.58 in. |
| August | 66.1 °F | 88.4 °F | 3.53 in. |
| September | 58.9 °F | 82.7 °F | 4.15 in. |
| October | 46.9 °F | 72.2 °F | 3.47 in. |
| November | 36.3 °F | 60.1 °F | 3.89 in. |
| December | 30.9 °F | 50.5 °F | 5.18 in. |
| Annual | 47.2 °F | 69.7 °F | 53.65 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |