Granite Shoals, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.7 °F (low) to 79.3 °F (high). Annual precipitation averages 30.7 Inches. Granite Shoals is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.1 °F | 61.2 °F | 1.84 in. |
| February | 39.1 °F | 64.8 °F | 1.91 in. |
| March | 46.7 °F | 71.9 °F | 2.65 in. |
| April | 54.0 °F | 79.4 °F | 2.31 in. |
| May | 63.1 °F | 85.5 °F | 3.84 in. |
| June | 70.1 °F | 92.3 °F | 2.79 in. |
| July | 72.5 °F | 95.4 °F | 2.25 in. |
| August | 72.4 °F | 96.7 °F | 1.91 in. |
| September | 66.3 °F | 90.4 °F | 3.13 in. |
| October | 55.4 °F | 81.5 °F | 3.2 in. |
| November | 45.4 °F | 70.4 °F | 2.73 in. |
| December | 36.6 °F | 62.1 °F | 2.18 in. |
| Annual | 54.7 °F | 79.3 °F | 30.74 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |