Trinidad, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.7 °C (low) to 25 °C (high). Annual precipitation averages 1105.2 Millimeters. Trinidad 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 | 2.6 °C | 14.6 °C | 82.3 mm |
| February | 4 °C | 16.3 °C | 94.23 mm |
| March | 8.2 °C | 19.9 °C | 101.85 mm |
| April | 11.8 °C | 24.6 °C | 91.95 mm |
| May | 17.1 °C | 28.4 °C | 118.87 mm |
| June | 21.4 °C | 32.3 °C | 103.89 mm |
| July | 22.6 °C | 34.7 °C | 54.86 mm |
| August | 22 °C | 35.3 °C | 59.94 mm |
| September | 19.4 °C | 31.9 °C | 83.31 mm |
| October | 12.5 °C | 26.5 °C | 133.1 mm |
| November | 7.6 °C | 19.9 °C | 82.3 mm |
| December | 2.9 °C | 15.4 °C | 98.55 mm |
| Annual | 12.7 °C | 25 °C | 1105.15 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 |