Granite, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9.1 °C (low) to 23.4 °C (high). Annual precipitation averages 714.5 Millimeters. Granite is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.2 °C | 11.1 °C | 24.64 mm |
| February | -1.4 °C | 13.1 °C | 27.94 mm |
| March | 3.3 °C | 18.3 °C | 47.24 mm |
| April | 7.8 °C | 23.1 °C | 70.61 mm |
| May | 14 °C | 28 °C | 107.95 mm |
| June | 19.4 °C | 32.9 °C | 91.44 mm |
| July | 21.5 °C | 35.5 °C | 61.21 mm |
| August | 20.8 °C | 35 °C | 79.25 mm |
| September | 16.6 °C | 30.6 °C | 69.85 mm |
| October | 9.6 °C | 24.3 °C | 66.04 mm |
| November | 2.8 °C | 17.2 °C | 38.1 mm |
| December | -2.2 °C | 11.3 °C | 30.23 mm |
| Annual | 9.1 °C | 23.4 °C | 714.5 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |