Gadsden, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.8 °F (low) to 73 °F (high). Annual precipitation averages 58.5 Inches. Gadsden is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.9 °F | 52.2 °F | 5.73 in. |
| February | 35.0 °F | 56.6 °F | 5.52 in. |
| March | 41.6 °F | 65.0 °F | 5.62 in. |
| April | 49.3 °F | 73.9 °F | 5.22 in. |
| May | 58.4 °F | 81.1 °F | 4.61 in. |
| June | 66.3 °F | 87.4 °F | 5.05 in. |
| July | 70.1 °F | 90.4 °F | 4.66 in. |
| August | 69.2 °F | 90.0 °F | 4.13 in. |
| September | 63.3 °F | 85.2 °F | 4.08 in. |
| October | 51.1 °F | 75.4 °F | 3.57 in. |
| November | 39.4 °F | 63.4 °F | 4.69 in. |
| December | 34.2 °F | 55.1 °F | 5.6 in. |
| Annual | 50.8 °F | 73 °F | 58.48 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |