Gunter, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.9 °C (low) to 23.9 °C (high). Annual precipitation averages 1046.2 Millimeters. Gunter is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.3 °C | 12.3 °C | 59.69 mm |
| February | 2.3 °C | 14.7 °C | 73.66 mm |
| March | 6.6 °C | 18.9 °C | 94.23 mm |
| April | 10.9 °C | 23.4 °C | 90.93 mm |
| May | 16.3 °C | 27.6 °C | 133.1 mm |
| June | 21.1 °C | 32.2 °C | 99.06 mm |
| July | 23.2 °C | 34.9 °C | 58.93 mm |
| August | 22.8 °C | 35.2 °C | 66.29 mm |
| September | 18.7 °C | 31 °C | 85.09 mm |
| October | 12.3 °C | 25.2 °C | 120.4 mm |
| November | 6.3 °C | 18.4 °C | 81.03 mm |
| December | 1.6 °C | 13.3 °C | 83.82 mm |
| Annual | 11.9 °C | 23.9 °C | 1046.23 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |