Eustace, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.6 °C (low) to 24.7 °C (high). Annual precipitation averages 1119.9 Millimeters. Eustace 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 | 1.9 °C | 13.8 °C | 86.61 mm |
| February | 3.9 °C | 16.1 °C | 91.44 mm |
| March | 7.9 °C | 20.1 °C | 104.14 mm |
| April | 11.7 °C | 24.3 °C | 97.28 mm |
| May | 17.1 °C | 28.3 °C | 118.62 mm |
| June | 21.4 °C | 32.3 °C | 103.12 mm |
| July | 22.9 °C | 34.4 °C | 56.13 mm |
| August | 22.7 °C | 35 °C | 63.25 mm |
| September | 18.9 °C | 31.7 °C | 80.01 mm |
| October | 12.8 °C | 25.9 °C | 127.76 mm |
| November | 7.1 °C | 19.7 °C | 88.39 mm |
| December | 2.9 °C | 14.9 °C | 103.12 mm |
| Annual | 12.6 °C | 24.7 °C | 1119.87 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |