Byers, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 35.1 °F (low) to 64.8 °F (high). Annual precipitation averages 16.4 Inches. Byers 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 | 15.3 °F | 43.4 °F | 0.41 in. |
| February | 17.6 °F | 45.3 °F | 0.47 in. |
| March | 25.8 °F | 55.0 °F | 1.13 in. |
| April | 32.5 °F | 61.6 °F | 1.94 in. |
| May | 42.1 °F | 70.9 °F | 2.41 in. |
| June | 51.7 °F | 83.0 °F | 2.03 in. |
| July | 58.4 °F | 89.9 °F | 2.52 in. |
| August | 56.2 °F | 87.2 °F | 2.13 in. |
| September | 47.6 °F | 79.6 °F | 1.05 in. |
| October | 34.5 °F | 65.7 °F | 1.06 in. |
| November | 24.0 °F | 53.0 °F | 0.73 in. |
| December | 15.5 °F | 43.1 °F | 0.49 in. |
| Annual | 35.1 °F | 64.8 °F | 16.37 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |