Chatom, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.2 °F (low) to 77.4 °F (high). Annual precipitation averages 63.4 Inches. Chatom is located in USDA Plant Hardiness Zone 8b. 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 | 35.7 °F | 59.6 °F | 6.63 in. |
| February | 39.0 °F | 64.0 °F | 6.11 in. |
| March | 45.0 °F | 71.4 °F | 5.78 in. |
| April | 51.5 °F | 78.2 °F | 4.79 in. |
| May | 60.2 °F | 85.0 °F | 4.82 in. |
| June | 67.7 °F | 90.0 °F | 6.12 in. |
| July | 70.4 °F | 92.0 °F | 5.7 in. |
| August | 70.1 °F | 91.5 °F | 5.04 in. |
| September | 65.1 °F | 87.6 °F | 4.68 in. |
| October | 53.0 °F | 79.1 °F | 3.03 in. |
| November | 42.6 °F | 69.1 °F | 4.42 in. |
| December | 37.9 °F | 61.7 °F | 6.25 in. |
| Annual | 53.2 °F | 77.4 °F | 63.37 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |