Cornville, Arizona has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 45.9 °F (low) to 79.6 °F (high). Annual precipitation averages 14.5 Inches. Cornville is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 29.5 °F | 59.8 °F | 1.47 in. |
| February | 32.4 °F | 63.9 °F | 1.26 in. |
| March | 37.5 °F | 70.3 °F | 1.31 in. |
| April | 42.7 °F | 77.7 °F | 0.56 in. |
| May | 50.1 °F | 86.4 °F | 0.31 in. |
| June | 58.2 °F | 97.4 °F | 0.16 in. |
| July | 66.4 °F | 99.9 °F | 1.98 in. |
| August | 65.4 °F | 97.4 °F | 2.45 in. |
| September | 58.2 °F | 92.1 °F | 1.53 in. |
| October | 46.4 °F | 82.0 °F | 0.97 in. |
| November | 35.2 °F | 69.3 °F | 0.91 in. |
| December | 29.0 °F | 58.6 °F | 1.55 in. |
| Annual | 45.9 °F | 79.6 °F | 14.46 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |