McNeal, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 47.1 °F (low) to 80.2 °F (high). Annual precipitation averages 10.8 Inches. McNeal is located in USDA Plant Hardiness Zone 8b. 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 | 30.2 °F | 63.0 °F | 0.7 in. |
| February | 33.6 °F | 66.6 °F | 0.6 in. |
| March | 38.3 °F | 73.1 °F | 0.54 in. |
| April | 43.6 °F | 80.1 °F | 0.13 in. |
| May | 51.2 °F | 87.9 °F | 0.18 in. |
| June | 60.8 °F | 96.7 °F | 0.26 in. |
| July | 66.6 °F | 95.0 °F | 2.16 in. |
| August | 65.4 °F | 92.8 °F | 2.84 in. |
| September | 59.5 °F | 90.2 °F | 1.09 in. |
| October | 47.9 °F | 82.9 °F | 0.91 in. |
| November | 37.1 °F | 71.3 °F | 0.6 in. |
| December | 30.8 °F | 62.5 °F | 0.76 in. |
| Annual | 47.1 °F | 80.2 °F | 10.77 in. |
| 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 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |