Goodlettsville, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.8 °F (low) to 69.6 °F (high). Annual precipitation averages 52.8 Inches. Goodlettsville 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.9 °F | 46.6 °F | 4.2 in. |
| February | 30.2 °F | 51.2 °F | 4.46 in. |
| March | 37.6 °F | 60.2 °F | 4.98 in. |
| April | 45.9 °F | 70.4 °F | 5.09 in. |
| May | 55.7 °F | 78.3 °F | 5.41 in. |
| June | 64.7 °F | 85.7 °F | 4.33 in. |
| July | 68.5 °F | 89.2 °F | 4.58 in. |
| August | 67.1 °F | 88.6 °F | 3.79 in. |
| September | 59.9 °F | 83.1 °F | 3.89 in. |
| October | 47.9 °F | 71.9 °F | 3.52 in. |
| November | 36.8 °F | 59.8 °F | 3.58 in. |
| December | 31.2 °F | 49.9 °F | 4.94 in. |
| Annual | 47.8 °F | 69.6 °F | 52.77 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 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 |