Clayton, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50 °F (low) to 71.1 °F (high). Annual precipitation averages 49.4 Inches. Clayton 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 | 30.8 °F | 51.5 °F | 3.66 in. |
| February | 32.8 °F | 55.2 °F | 2.97 in. |
| March | 39.3 °F | 62.7 °F | 4.0 in. |
| April | 48.1 °F | 72.0 °F | 3.68 in. |
| May | 57.7 °F | 78.8 °F | 3.75 in. |
| June | 65.9 °F | 85.7 °F | 4.26 in. |
| July | 70.1 °F | 89.1 °F | 5.62 in. |
| August | 68.5 °F | 87.2 °F | 5.19 in. |
| September | 63.0 °F | 81.9 °F | 5.82 in. |
| October | 50.2 °F | 72.4 °F | 3.45 in. |
| November | 39.4 °F | 62.6 °F | 3.43 in. |
| December | 33.8 °F | 54.4 °F | 3.6 in. |
| Annual | 50 °F | 71.1 °F | 49.43 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |