Kayenta, Arizona has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 40 °F (low) to 69 °F (high). Annual precipitation averages 7.7 Inches. 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 | 20.6 °F | 44.1 °F | 0.72 in. |
| February | 25.0 °F | 50.0 °F | 0.59 in. |
| March | 31.0 °F | 59.4 °F | 0.53 in. |
| April | 37.4 °F | 67.7 °F | 0.34 in. |
| May | 46.1 °F | 77.7 °F | 0.47 in. |
| June | 54.6 °F | 90.0 °F | 0.21 in. |
| July | 62.5 °F | 93.7 °F | 1.17 in. |
| August | 60.8 °F | 90.7 °F | 1.06 in. |
| September | 52.5 °F | 83.2 °F | 0.93 in. |
| October | 39.5 °F | 70.8 °F | 0.76 in. |
| November | 28.6 °F | 55.7 °F | 0.44 in. |
| December | 20.8 °F | 44.5 °F | 0.48 in. |
| Annual | 40 °F | 69 °F | 7.7 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |