Tucumcari, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 6.7 °C (low) to 23.2 °C (high). Annual precipitation averages 401.3 Millimeters. Tucumcari is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.4 °C | 11.6 °C | 11.18 mm |
| February | -2.6 °C | 14.3 °C | 10.16 mm |
| March | 1.2 °C | 18.7 °C | 23.11 mm |
| April | 5.3 °C | 22.8 °C | 24.64 mm |
| May | 10.9 °C | 27.9 °C | 41.4 mm |
| June | 16.3 °C | 33.4 °C | 48.26 mm |
| July | 18.8 °C | 34.7 °C | 69.34 mm |
| August | 17.9 °C | 33.4 °C | 63.25 mm |
| September | 13.9 °C | 29.7 °C | 40.89 mm |
| October | 6.7 °C | 23.6 °C | 35.81 mm |
| November | 0.3 °C | 16.9 °C | 16.51 mm |
| December | -3.9 °C | 11.6 °C | 16.76 mm |
| Annual | 6.7 °C | 23.2 °C | 401.31 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |