Haxtun, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.9 °C (low) to 17.7 °C (high). Annual precipitation averages 432.3 Millimeters. Haxtun is located in USDA Plant Hardiness Zone 5b. 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 | -9.2 °C | 5.3 °C | 8.13 mm |
| February | -8.4 °C | 6.4 °C | 10.92 mm |
| March | -4.1 °C | 12.2 °C | 23.11 mm |
| April | 0.2 °C | 16.2 °C | 46.23 mm |
| May | 6.2 °C | 21.3 °C | 68.58 mm |
| June | 12.1 °C | 28.2 °C | 65.53 mm |
| July | 15.3 °C | 31.8 °C | 60.2 mm |
| August | 13.9 °C | 30.4 °C | 60.71 mm |
| September | 8.8 °C | 26.2 °C | 36.07 mm |
| October | 1.5 °C | 18.2 °C | 30.73 mm |
| November | -4.4 °C | 11.3 °C | 12.45 mm |
| December | -9.1 °C | 5.3 °C | 9.65 mm |
| Annual | 1.9 °C | 17.7 °C | 432.31 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 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |