Grifton, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.8 °F (low) to 73.2 °F (high). Annual precipitation averages 52.6 Inches. Grifton 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. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.3 °F | 54.2 °F | 3.73 in. |
| February | 34.9 °F | 57.5 °F | 3.19 in. |
| March | 40.9 °F | 64.6 °F | 3.83 in. |
| April | 50.2 °F | 73.9 °F | 3.51 in. |
| May | 59.1 °F | 80.7 °F | 4.02 in. |
| June | 67.3 °F | 87.4 °F | 5.34 in. |
| July | 71.2 °F | 90.4 °F | 5.86 in. |
| August | 69.5 °F | 88.4 °F | 6.02 in. |
| September | 64.0 °F | 83.5 °F | 6.57 in. |
| October | 52.3 °F | 75.0 °F | 3.7 in. |
| November | 41.9 °F | 65.2 °F | 3.39 in. |
| December | 36.4 °F | 57.3 °F | 3.39 in. |
| Annual | 51.8 °F | 73.2 °F | 52.55 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |