Trinidad, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.2 °C (low) to 19.4 °C (high). Annual precipitation averages 378.2 Millimeters. Trinidad is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8 °C | 8.8 °C | 11.68 mm |
| February | -6.8 °C | 10.2 °C | 12.95 mm |
| March | -3.1 °C | 14.4 °C | 25.4 mm |
| April | 0.7 °C | 18 °C | 32 mm |
| May | 5.8 °C | 23.1 °C | 41.4 mm |
| June | 11.1 °C | 28.9 °C | 33.27 mm |
| July | 13.8 °C | 30.9 °C | 67.82 mm |
| August | 12.9 °C | 29.7 °C | 61.98 mm |
| September | 8.8 °C | 26.4 °C | 32.77 mm |
| October | 2.1 °C | 20.4 °C | 26.92 mm |
| November | -3.6 °C | 13.6 °C | 17.02 mm |
| December | -7.9 °C | 8.7 °C | 14.99 mm |
| Annual | 2.2 °C | 19.4 °C | 378.2 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |