Grapeland, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.1 °C (low) to 25.2 °C (high). Annual precipitation averages 1185.7 Millimeters. Grapeland is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.2 °C | 14.9 °C | 104.65 mm |
| February | 5.1 °C | 17.2 °C | 90.93 mm |
| March | 8.6 °C | 21.1 °C | 107.95 mm |
| April | 12.3 °C | 24.9 °C | 91.95 mm |
| May | 17.3 °C | 28.8 °C | 118.87 mm |
| June | 21.2 °C | 32.3 °C | 106.93 mm |
| July | 22.6 °C | 34.2 °C | 79.25 mm |
| August | 22.3 °C | 34.8 °C | 82.8 mm |
| September | 19.2 °C | 31.6 °C | 86.87 mm |
| October | 13.4 °C | 26.5 °C | 109.73 mm |
| November | 7.9 °C | 20.3 °C | 93.22 mm |
| December | 4.2 °C | 15.8 °C | 112.52 mm |
| Annual | 13.1 °C | 25.2 °C | 1185.67 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |