Winslow, Arizona has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 39.6 °F (low) to 72 °F (high). Annual precipitation averages 7.4 Inches. Winslow 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 | 20.8 °F | 49.8 °F | 0.57 in. |
| February | 24.9 °F | 55.5 °F | 0.47 in. |
| March | 30.5 °F | 63.8 °F | 0.57 in. |
| April | 36.2 °F | 70.9 °F | 0.36 in. |
| May | 44.9 °F | 80.0 °F | 0.31 in. |
| June | 54.1 °F | 90.9 °F | 0.15 in. |
| July | 62.7 °F | 93.7 °F | 0.98 in. |
| August | 61.2 °F | 90.8 °F | 1.23 in. |
| September | 52.6 °F | 84.7 °F | 0.93 in. |
| October | 38.9 °F | 73.5 °F | 0.7 in. |
| November | 27.4 °F | 60.8 °F | 0.49 in. |
| December | 20.5 °F | 49.2 °F | 0.6 in. |
| Annual | 39.6 °F | 72 °F | 7.36 in. |
| 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 : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |