Cullomburg, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 53.1 °F (low) to 76.8 °F (high). Annual precipitation averages 58.1 Inches. Cullomburg 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 | 35.3 °F | 58.6 °F | 5.8 in. |
| February | 38.8 °F | 63.3 °F | 5.16 in. |
| March | 44.8 °F | 70.8 °F | 5.79 in. |
| April | 51.4 °F | 77.4 °F | 4.51 in. |
| May | 60.2 °F | 84.3 °F | 4.18 in. |
| June | 68.1 °F | 89.5 °F | 5.47 in. |
| July | 70.7 °F | 91.6 °F | 5.39 in. |
| August | 69.9 °F | 91.3 °F | 4.92 in. |
| September | 65.0 °F | 87.1 °F | 3.96 in. |
| October | 53.3 °F | 78.5 °F | 3.3 in. |
| November | 42.7 °F | 68.2 °F | 4.15 in. |
| December | 37.5 °F | 60.7 °F | 5.48 in. |
| Annual | 53.1 °F | 76.8 °F | 58.11 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 |