McConnico, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 51.8 °F (low) to 78.4 °F (high). Annual precipitation averages 9 Inches. McConnico is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.2 °F | 58.5 °F | 1.22 in. |
| February | 37.5 °F | 62.1 °F | 1.71 in. |
| March | 42.0 °F | 68.6 °F | 1.2 in. |
| April | 47.3 °F | 75.4 °F | 0.28 in. |
| May | 56.4 °F | 84.8 °F | 0.3 in. |
| June | 65.3 °F | 95.1 °F | 0.04 in. |
| July | 72.8 °F | 99.7 °F | 0.49 in. |
| August | 71.6 °F | 98.5 °F | 1.05 in. |
| September | 64.1 °F | 92.8 °F | 0.65 in. |
| October | 52.4 °F | 80.4 °F | 0.62 in. |
| November | 42.0 °F | 67.7 °F | 0.53 in. |
| December | 35.4 °F | 57.6 °F | 0.93 in. |
| Annual | 51.8 °F | 78.4 °F | 9.02 in. |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |