Altamahaw, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.6 °F (low) to 70.6 °F (high). Annual precipitation averages 46.6 Inches. Altamahaw 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 28.5 °F | 49.9 °F | 3.66 in. |
| February | 30.6 °F | 53.6 °F | 2.94 in. |
| March | 37.3 °F | 61.4 °F | 4.13 in. |
| April | 46.3 °F | 71.6 °F | 3.91 in. |
| May | 55.4 °F | 78.7 °F | 3.77 in. |
| June | 63.7 °F | 86.2 °F | 4.35 in. |
| July | 68.0 °F | 89.4 °F | 4.47 in. |
| August | 66.5 °F | 87.7 °F | 4.12 in. |
| September | 60.2 °F | 81.8 °F | 4.91 in. |
| October | 47.2 °F | 71.9 °F | 3.35 in. |
| November | 36.4 °F | 61.6 °F | 3.41 in. |
| December | 31.4 °F | 52.9 °F | 3.6 in. |
| Annual | 47.6 °F | 70.6 °F | 46.62 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 7b : 5°F to 10°F |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |