Grandy, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.7 °F (low) to 69 °F (high). Annual precipitation averages 50.6 Inches. Grandy is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 36.0 °F | 51.4 °F | 3.87 in. |
| February | 36.8 °F | 53.1 °F | 3.12 in. |
| March | 42.0 °F | 59.0 °F | 3.86 in. |
| April | 51.1 °F | 67.3 °F | 3.45 in. |
| May | 59.8 °F | 74.5 °F | 3.83 in. |
| June | 68.9 °F | 82.3 °F | 4.62 in. |
| July | 73.2 °F | 86.1 °F | 5.35 in. |
| August | 72.4 °F | 84.6 °F | 5.75 in. |
| September | 68.9 °F | 79.9 °F | 5.33 in. |
| October | 58.9 °F | 71.8 °F | 4.08 in. |
| November | 47.9 °F | 62.3 °F | 3.52 in. |
| December | 40.6 °F | 55.3 °F | 3.78 in. |
| Annual | 54.7 °F | 69 °F | 50.56 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 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 |