Estelline, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 8.9 °C (low) to 24.2 °C (high). Annual precipitation averages 597.4 Millimeters. Estelline is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.2 °C | 12.2 °C | 20.57 mm |
| February | -1.3 °C | 14.2 °C | 23.88 mm |
| March | 3.2 °C | 19.7 °C | 37.85 mm |
| April | 7.8 °C | 24.6 °C | 56.39 mm |
| May | 13.8 °C | 28.7 °C | 84.58 mm |
| June | 19.2 °C | 33.3 °C | 87.38 mm |
| July | 21.2 °C | 35.7 °C | 54.61 mm |
| August | 20.6 °C | 35.2 °C | 63.5 mm |
| September | 16.3 °C | 30.8 °C | 66.8 mm |
| October | 9.3 °C | 24.9 °C | 48.01 mm |
| November | 2.5 °C | 18.2 °C | 29.97 mm |
| December | -2.3 °C | 12.4 °C | 23.88 mm |
| Annual | 8.9 °C | 24.2 °C | 597.42 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |