Winkelman, Arizona has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 52.6 °F (low) to 85.7 °F (high). Annual precipitation averages 13.1 Inches. Winkelman is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.7 °F | 66.3 °F | 1.61 in. |
| February | 38.1 °F | 69.5 °F | 1.61 in. |
| March | 42.5 °F | 76.0 °F | 1.14 in. |
| April | 48.3 °F | 84.4 °F | 0.38 in. |
| May | 56.6 °F | 94.3 °F | 0.3 in. |
| June | 66.6 °F | 103.8 °F | 0.15 in. |
| July | 73.8 °F | 104.3 °F | 1.62 in. |
| August | 73.1 °F | 102.5 °F | 2.2 in. |
| September | 66.7 °F | 98.1 °F | 1.29 in. |
| October | 53.1 °F | 88.8 °F | 0.82 in. |
| November | 41.6 °F | 75.4 °F | 0.81 in. |
| December | 34.8 °F | 65.3 °F | 1.17 in. |
| Annual | 52.6 °F | 85.7 °F | 13.1 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |