Orrum, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.6 °F (low) to 73.6 °F (high). Annual precipitation averages 49.6 Inches. Orrum is located in USDA Plant Hardiness Zone 8b. 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 | 33.1 °F | 55.3 °F | 3.56 in. |
| February | 35.5 °F | 58.5 °F | 3.32 in. |
| March | 41.4 °F | 65.8 °F | 3.66 in. |
| April | 50.0 °F | 74.4 °F | 3.45 in. |
| May | 58.8 °F | 81.2 °F | 3.75 in. |
| June | 67.4 °F | 87.2 °F | 4.97 in. |
| July | 70.9 °F | 90.1 °F | 5.1 in. |
| August | 69.5 °F | 88.5 °F | 5.61 in. |
| September | 63.9 °F | 83.6 °F | 5.71 in. |
| October | 51.9 °F | 74.9 °F | 3.51 in. |
| November | 41.3 °F | 65.7 °F | 3.35 in. |
| December | 35.9 °F | 58.1 °F | 3.61 in. |
| Annual | 51.6 °F | 73.6 °F | 49.6 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 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |