Lazear, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.1 °C (low) to 18.6 °C (high). Annual precipitation averages 245.6 Millimeters. Lazear is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.7 °C | 4 °C | 14.99 mm |
| February | -5.8 °C | 7.6 °C | 18.54 mm |
| March | -2.2 °C | 13.6 °C | 16.76 mm |
| April | 1.1 °C | 17.9 °C | 20.32 mm |
| May | 5.8 °C | 23.4 °C | 22.35 mm |
| June | 10.4 °C | 30.2 °C | 10.92 mm |
| July | 13.9 °C | 32.9 °C | 22.86 mm |
| August | 12.9 °C | 31.2 °C | 25.65 mm |
| September | 8.3 °C | 26.9 °C | 32.77 mm |
| October | 2.1 °C | 19.6 °C | 28.19 mm |
| November | -3.7 °C | 11.2 °C | 17.78 mm |
| December | -8.4 °C | 4.1 °C | 14.48 mm |
| Annual | 2.1 °C | 18.6 °C | 245.61 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |