Granite Falls, North Carolina has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.6 °C (low) to 20.8 °C (high). Annual precipitation averages 1244.1 Millimeters. Granite Falls 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.9 °C | 9.7 °C | 107.19 mm |
| February | -0.6 °C | 11.8 °C | 88.39 mm |
| March | 3.2 °C | 15.9 °C | 106.43 mm |
| April | 8.1 °C | 21.2 °C | 111.76 mm |
| May | 12.9 °C | 25.2 °C | 99.82 mm |
| June | 17.3 °C | 29 °C | 122.68 mm |
| July | 19.5 °C | 30.8 °C | 108.2 mm |
| August | 18.8 °C | 29.9 °C | 114.05 mm |
| September | 15.4 °C | 26.8 °C | 98.55 mm |
| October | 8.7 °C | 21.7 °C | 90.68 mm |
| November | 2.8 °C | 16.1 °C | 90.93 mm |
| December | -0.5 °C | 11.2 °C | 105.41 mm |
| Annual | 8.6 °C | 20.8 °C | 1244.09 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |