Apex, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50.7 °F (low) to 70.2 °F (high). Annual precipitation averages 48.5 Inches. Apex 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 | 31.6 °F | 50.5 °F | 3.47 in. |
| February | 33.7 °F | 53.9 °F | 3.05 in. |
| March | 40.0 °F | 61.6 °F | 3.98 in. |
| April | 49.2 °F | 71.0 °F | 3.73 in. |
| May | 58.5 °F | 77.8 °F | 3.58 in. |
| June | 66.6 °F | 84.9 °F | 4.53 in. |
| July | 70.5 °F | 88.3 °F | 5.01 in. |
| August | 69.0 °F | 86.5 °F | 5.03 in. |
| September | 63.5 °F | 80.9 °F | 5.48 in. |
| October | 51.0 °F | 71.5 °F | 3.71 in. |
| November | 40.1 °F | 61.6 °F | 3.38 in. |
| December | 34.7 °F | 53.4 °F | 3.52 in. |
| Annual | 50.7 °F | 70.2 °F | 48.47 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 |