Avondale, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.2 °C (low) to 20.1 °C (high). Annual precipitation averages 279.7 Millimeters. Avondale is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.6 °C | 8.4 °C | 5.84 mm |
| February | -7.8 °C | 9.8 °C | 5.84 mm |
| March | -3.4 °C | 15.3 °C | 11.94 mm |
| April | 1.2 °C | 18.8 °C | 27.18 mm |
| May | 7.1 °C | 24.1 °C | 37.85 mm |
| June | 12.5 °C | 30.3 °C | 34.04 mm |
| July | 15.2 °C | 32.7 °C | 47.75 mm |
| August | 14.1 °C | 31.2 °C | 55.37 mm |
| September | 9.1 °C | 27.6 °C | 19.05 mm |
| October | 1.8 °C | 20.8 °C | 19.81 mm |
| November | -4.7 °C | 13.7 °C | 8.64 mm |
| December | -9.2 °C | 8.2 °C | 6.35 mm |
| Annual | 2.2 °C | 20.1 °C | 279.66 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |