Glen Alpine, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.4 °F (low) to 69.9 °F (high). Annual precipitation averages 51 Inches. Glen Alpine 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 | 27.8 °F | 49.9 °F | 4.32 in. |
| February | 30.1 °F | 53.9 °F | 3.63 in. |
| March | 36.7 °F | 61.4 °F | 4.18 in. |
| April | 45.0 °F | 70.8 °F | 4.37 in. |
| May | 53.9 °F | 78.2 °F | 4.57 in. |
| June | 61.9 °F | 84.7 °F | 4.91 in. |
| July | 65.9 °F | 88.0 °F | 4.49 in. |
| August | 64.7 °F | 86.2 °F | 4.11 in. |
| September | 58.5 °F | 80.6 °F | 4.78 in. |
| October | 46.5 °F | 71.4 °F | 3.45 in. |
| November | 35.7 °F | 61.3 °F | 3.63 in. |
| December | 30.2 °F | 52.6 °F | 4.54 in. |
| Annual | 46.4 °F | 69.9 °F | 50.98 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |