Cornfields, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 36.4 °F (low) to 67.4 °F (high). Annual precipitation averages 9.1 Inches. Cornfields is located in USDA Plant Hardiness Zone 6b. 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 | 18.4 °F | 44.9 °F | 0.7 in. |
| February | 22.3 °F | 49.7 °F | 0.7 in. |
| March | 27.1 °F | 58.1 °F | 0.7 in. |
| April | 33.1 °F | 65.9 °F | 0.47 in. |
| May | 41.1 °F | 75.3 °F | 0.49 in. |
| June | 49.9 °F | 86.9 °F | 0.16 in. |
| July | 57.7 °F | 90.1 °F | 1.17 in. |
| August | 57.0 °F | 87.0 °F | 1.35 in. |
| September | 49.0 °F | 80.9 °F | 0.93 in. |
| October | 36.9 °F | 69.4 °F | 0.89 in. |
| November | 26.0 °F | 55.7 °F | 0.65 in. |
| December | 18.3 °F | 44.9 °F | 0.93 in. |
| Annual | 36.4 °F | 67.4 °F | 9.14 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |