Cimarron Hills, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.6 °C (low) to 16.3 °C (high). Annual precipitation averages 450.3 Millimeters. Cimarron Hills 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 | -8.2 °C | 5.8 °C | 7.11 mm |
| February | -7.4 °C | 6.5 °C | 11.43 mm |
| March | -3.8 °C | 10.9 °C | 23.11 mm |
| April | -0.3 °C | 14.3 °C | 44.96 mm |
| May | 4.7 °C | 19.3 °C | 55.63 mm |
| June | 10.1 °C | 25.9 °C | 57.4 mm |
| July | 13.4 °C | 29 °C | 85.34 mm |
| August | 12.6 °C | 27.4 °C | 86.11 mm |
| September | 7.9 °C | 23.7 °C | 37.85 mm |
| October | 1.7 °C | 16.7 °C | 21.59 mm |
| November | -4.1 °C | 10.2 °C | 10.92 mm |
| December | -8 °C | 5.7 °C | 8.89 mm |
| Annual | 1.6 °C | 16.3 °C | 450.34 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 | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |