Spencer Mountain, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.7 °F (low) to 71.8 °F (high). Annual precipitation averages 43.7 Inches. Spencer Mountain is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.5 °F | 52.1 °F | 3.6 in. |
| February | 33.2 °F | 55.9 °F | 3.11 in. |
| March | 39.7 °F | 63.4 °F | 3.83 in. |
| April | 48.5 °F | 72.5 °F | 3.55 in. |
| May | 57.5 °F | 79.5 °F | 3.66 in. |
| June | 65.6 °F | 86.5 °F | 4.22 in. |
| July | 69.2 °F | 89.8 °F | 3.71 in. |
| August | 68.2 °F | 88.1 °F | 4.3 in. |
| September | 62.3 °F | 82.9 °F | 3.92 in. |
| October | 49.8 °F | 73.3 °F | 3.21 in. |
| November | 38.8 °F | 62.8 °F | 2.99 in. |
| December | 33.2 °F | 54.7 °F | 3.64 in. |
| Annual | 49.7 °F | 71.8 °F | 43.74 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |