Peoria, Colorado has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.4 °C (low) to 18.1 °C (high). Annual precipitation averages 418.8 Millimeters. Peoria is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.8 °C | 6.1 °C | 10.16 mm |
| February | -8.4 °C | 7.3 °C | 11.43 mm |
| March | -3.9 °C | 12.7 °C | 27.94 mm |
| April | -0.1 °C | 16.4 °C | 49.78 mm |
| May | 5.3 °C | 21.6 °C | 61.47 mm |
| June | 10.7 °C | 28.3 °C | 49.02 mm |
| July | 14.3 °C | 32.1 °C | 67.82 mm |
| August | 13.2 °C | 30.6 °C | 54.61 mm |
| September | 8.4 °C | 26.4 °C | 25.65 mm |
| October | 1.1 °C | 18.7 °C | 27.43 mm |
| November | -4.9 °C | 11.5 °C | 19.3 mm |
| December | -9.7 °C | 6 °C | 14.22 mm |
| Annual | 1.4 °C | 18.1 °C | 418.83 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |