Cimarron, New Mexico has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.6 °C (low) to 19 °C (high). Annual precipitation averages 434.6 Millimeters. Cimarron 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 | -9.1 °C | 8.5 °C | 12.7 mm |
| February | -7.8 °C | 10.2 °C | 14.48 mm |
| March | -4.2 °C | 14.3 °C | 23.11 mm |
| April | -0.7 °C | 18.3 °C | 33.27 mm |
| May | 4.3 °C | 22.8 °C | 48.26 mm |
| June | 9.1 °C | 28.2 °C | 44.2 mm |
| July | 11.6 °C | 29.5 °C | 74.68 mm |
| August | 10.9 °C | 28.3 °C | 81.03 mm |
| September | 6.9 °C | 25.4 °C | 45.21 mm |
| October | 0.7 °C | 20.4 °C | 30.48 mm |
| November | -5.1 °C | 13.6 °C | 15.24 mm |
| December | -9 °C | 8.4 °C | 11.94 mm |
| Annual | 0.6 °C | 19 °C | 434.6 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 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 | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |