McConnico, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 11 °C (low) to 25.8 °C (high). Annual precipitation averages 229.1 Millimeters. 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 | 1.8 °C | 14.7 °C | 30.99 mm |
| February | 3.1 °C | 16.7 °C | 43.43 mm |
| March | 5.6 °C | 20.3 °C | 30.48 mm |
| April | 8.5 °C | 24.1 °C | 7.11 mm |
| May | 13.6 °C | 29.3 °C | 7.62 mm |
| June | 18.5 °C | 35.1 °C | 1.02 mm |
| July | 22.7 °C | 37.6 °C | 12.45 mm |
| August | 22 °C | 36.9 °C | 26.67 mm |
| September | 17.8 °C | 33.8 °C | 16.51 mm |
| October | 11.3 °C | 26.9 °C | 15.75 mm |
| November | 5.6 °C | 19.8 °C | 13.46 mm |
| December | 1.9 °C | 14.2 °C | 23.62 mm |
| Annual | 11 °C | 25.8 °C | 229.11 mm |
| 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 : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |