Copper Hill, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 9.2 °C (low) to 24.2 °C (high). Annual precipitation averages 434.3 Millimeters. Copper Hill is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.6 °C | 14.1 °C | 51.56 mm |
| February | 1.5 °C | 15.7 °C | 46.23 mm |
| March | 4 °C | 19.1 °C | 40.64 mm |
| April | 6.9 °C | 23.1 °C | 11.68 mm |
| May | 11.5 °C | 28 °C | 14.73 mm |
| June | 16.6 °C | 33.7 °C | 4.06 mm |
| July | 19.9 °C | 34.6 °C | 56.13 mm |
| August | 19 °C | 33.5 °C | 65.02 mm |
| September | 16.1 °C | 30.9 °C | 43.18 mm |
| October | 9.9 °C | 25.4 °C | 28.45 mm |
| November | 4.3 °C | 19.2 °C | 26.92 mm |
| December | 0.4 °C | 13.5 °C | 45.72 mm |
| Annual | 9.2 °C | 24.2 °C | 434.32 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |