Rex, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.4 °F (low) to 73.3 °F (high). Annual precipitation averages 48.6 Inches. Rex 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 | 32.3 °F | 54.1 °F | 3.54 in. |
| February | 34.3 °F | 57.5 °F | 3.14 in. |
| March | 40.9 °F | 65.2 °F | 3.65 in. |
| April | 49.9 °F | 74.2 °F | 3.38 in. |
| May | 58.9 °F | 81.2 °F | 3.48 in. |
| June | 67.5 °F | 87.7 °F | 4.94 in. |
| July | 71.3 °F | 90.7 °F | 4.91 in. |
| August | 69.7 °F | 88.7 °F | 5.28 in. |
| September | 64.0 °F | 83.7 °F | 5.9 in. |
| October | 51.9 °F | 74.5 °F | 3.46 in. |
| November | 40.7 °F | 64.8 °F | 3.36 in. |
| December | 35.1 °F | 57.1 °F | 3.56 in. |
| Annual | 51.4 °F | 73.3 °F | 48.6 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 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |