Kayenta, Arizona has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 4.4 °C (low) to 20.5 °C (high). Annual precipitation averages 195.6 Millimeters. Kayenta is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.3 °C | 6.7 °C | 18.29 mm |
| February | -3.9 °C | 10 °C | 14.99 mm |
| March | -0.6 °C | 15.2 °C | 13.46 mm |
| April | 3 °C | 19.8 °C | 8.64 mm |
| May | 7.8 °C | 25.4 °C | 11.94 mm |
| June | 12.6 °C | 32.2 °C | 5.33 mm |
| July | 16.9 °C | 34.3 °C | 29.72 mm |
| August | 16 °C | 32.6 °C | 26.92 mm |
| September | 11.4 °C | 28.4 °C | 23.62 mm |
| October | 4.2 °C | 21.6 °C | 19.3 mm |
| November | -1.9 °C | 13.2 °C | 11.18 mm |
| December | -6.2 °C | 6.9 °C | 12.19 mm |
| Annual | 4.4 °C | 20.5 °C | 195.58 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 |