Pirtleville, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 8.6 °C (low) to 27 °C (high). Annual precipitation averages 322.3 Millimeters. Pirtleville is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.3 °C | 17.6 °C | 19.56 mm |
| February | 1 °C | 19.5 °C | 14.22 mm |
| March | 3.6 °C | 23.1 °C | 15.75 mm |
| April | 6.7 °C | 26.8 °C | 5.08 mm |
| May | 11.4 °C | 31.4 °C | 5.59 mm |
| June | 16.7 °C | 36.1 °C | 11.94 mm |
| July | 19.8 °C | 35.2 °C | 81.28 mm |
| August | 19.1 °C | 33.8 °C | 79.5 mm |
| September | 15.7 °C | 32.6 °C | 35.81 mm |
| October | 8.9 °C | 28.4 °C | 16 mm |
| November | 2.8 °C | 22.4 °C | 16 mm |
| December | -0.8 °C | 17.3 °C | 21.59 mm |
| Annual | 8.6 °C | 27 °C | 322.32 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |