Trenton, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.1 °F (low) to 69.8 °F (high). Annual precipitation averages 54.8 Inches. Trenton 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 | 28.4 °F | 46.3 °F | 4.12 in. |
| February | 31.5 °F | 50.8 °F | 4.64 in. |
| March | 39.2 °F | 60.3 °F | 5.33 in. |
| April | 48.5 °F | 70.8 °F | 5.2 in. |
| May | 58.6 °F | 79.1 °F | 5.78 in. |
| June | 66.5 °F | 86.6 °F | 4.44 in. |
| July | 69.8 °F | 89.6 °F | 4.18 in. |
| August | 67.8 °F | 89.0 °F | 3.46 in. |
| September | 60.2 °F | 83.3 °F | 3.88 in. |
| October | 48.1 °F | 72.7 °F | 3.89 in. |
| November | 38.5 °F | 59.9 °F | 4.58 in. |
| December | 31.6 °F | 49.7 °F | 5.3 in. |
| Annual | 49.1 °F | 69.8 °F | 54.8 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 |