Truchas, New Mexico has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.7 °C (low) to 15.5 °C (high). Annual precipitation averages 405.4 Millimeters. Truchas is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.1 °C | 5.2 °C | 17.02 mm |
| February | -8.3 °C | 6.5 °C | 21.08 mm |
| March | -5.4 °C | 10.4 °C | 29.97 mm |
| April | -2.7 °C | 14.1 °C | 29.46 mm |
| May | 1.6 °C | 19.3 °C | 29.46 mm |
| June | 7.3 °C | 25.1 °C | 23.37 mm |
| July | 9.7 °C | 26.6 °C | 54.36 mm |
| August | 8.9 °C | 25.2 °C | 65.79 mm |
| September | 5.6 °C | 22.1 °C | 39.62 mm |
| October | 0.1 °C | 16.3 °C | 38.61 mm |
| November | -5.4 °C | 9.8 °C | 28.7 mm |
| December | -9.2 °C | 5 °C | 27.94 mm |
| Annual | -0.7 °C | 15.5 °C | 405.38 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |