Joseph City, Arizona has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 3.9 °C (low) to 22.7 °C (high). Annual precipitation averages 200.9 Millimeters. Joseph City is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.4 °C | 10.2 °C | 15.24 mm |
| February | -4.3 °C | 13.6 °C | 11.68 mm |
| March | -1.2 °C | 17.9 °C | 17.27 mm |
| April | 2.2 °C | 22.2 °C | 6.6 mm |
| May | 6.8 °C | 27.2 °C | 7.62 mm |
| June | 11.7 °C | 33.2 °C | 4.57 mm |
| July | 16.5 °C | 34.8 °C | 30.48 mm |
| August | 15.7 °C | 33.1 °C | 34.04 mm |
| September | 11.1 °C | 29.8 °C | 25.15 mm |
| October | 3.6 °C | 23.7 °C | 19.05 mm |
| November | -2.7 °C | 16.5 °C | 12.95 mm |
| December | -6.4 °C | 10 °C | 16.26 mm |
| Annual | 3.9 °C | 22.7 °C | 200.91 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |