Ganado, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2 °C (low) to 18.9 °C (high). Annual precipitation averages 248.2 Millimeters. Ganado 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 | -8.1 °C | 6.7 °C | 18.8 mm |
| February | -5.8 °C | 9.1 °C | 20.07 mm |
| March | -3.1 °C | 13.7 °C | 17.53 mm |
| April | 0.2 °C | 17.7 °C | 10.92 mm |
| May | 4.6 °C | 23 °C | 15.24 mm |
| June | 9.5 °C | 29.6 °C | 5.33 mm |
| July | 13.6 °C | 31.6 °C | 27.94 mm |
| August | 13.3 °C | 29.6 °C | 39.37 mm |
| September | 8.9 °C | 26.4 °C | 26.67 mm |
| October | 2.3 °C | 20 °C | 23.62 mm |
| November | -3.7 °C | 12.5 °C | 18.29 mm |
| December | -8 °C | 6.7 °C | 24.38 mm |
| Annual | 2 °C | 18.9 °C | 248.16 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |