Morenci, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 8.3 °C (low) to 25.3 °C (high). Annual precipitation averages 370.1 Millimeters. Morenci is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.6 °C | 14.7 °C | 30.73 mm |
| February | 0.6 °C | 16.4 °C | 28.45 mm |
| March | 2.9 °C | 20.4 °C | 21.59 mm |
| April | 6.6 °C | 24.8 °C | 7.62 mm |
| May | 11.1 °C | 30 °C | 11.43 mm |
| June | 16.2 °C | 35.4 °C | 12.19 mm |
| July | 19.5 °C | 35.5 °C | 59.94 mm |
| August | 19 °C | 34.2 °C | 66.55 mm |
| September | 15.6 °C | 31.7 °C | 49.28 mm |
| October | 8.8 °C | 26.4 °C | 26.67 mm |
| November | 2.4 °C | 19.6 °C | 23.37 mm |
| December | -1.3 °C | 14.2 °C | 32.26 mm |
| Annual | 8.3 °C | 25.3 °C | 370.08 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |