Gadsden, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.2 °F (low) to 70.1 °F (high). Annual precipitation averages 55.1 Inches. Gadsden 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 | 28.8 °F | 47.3 °F | 4.15 in. |
| February | 31.8 °F | 51.8 °F | 4.75 in. |
| March | 39.4 °F | 60.9 °F | 5.38 in. |
| April | 48.6 °F | 71.0 °F | 5.2 in. |
| May | 58.5 °F | 78.9 °F | 5.73 in. |
| June | 66.5 °F | 86.3 °F | 4.31 in. |
| July | 69.7 °F | 89.2 °F | 4.15 in. |
| August | 67.7 °F | 88.8 °F | 3.69 in. |
| September | 60.5 °F | 83.2 °F | 3.95 in. |
| October | 48.4 °F | 72.8 °F | 3.93 in. |
| November | 38.6 °F | 60.5 °F | 4.49 in. |
| December | 31.8 °F | 50.3 °F | 5.35 in. |
| Annual | 49.2 °F | 70.1 °F | 55.08 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 |