San Miguel, Arizona has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 53 °F (low) to 84.8 °F (high). Annual precipitation averages 13.3 Inches. San Miguel is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 36.7 °F | 67.1 °F | 0.97 in. |
| February | 39.6 °F | 69.9 °F | 0.85 in. |
| March | 43.8 °F | 76.1 °F | 0.78 in. |
| April | 48.0 °F | 83.1 °F | 0.25 in. |
| May | 55.9 °F | 92.1 °F | 0.18 in. |
| June | 65.6 °F | 101.4 °F | 0.29 in. |
| July | 73.3 °F | 101.7 °F | 2.91 in. |
| August | 72.1 °F | 99.7 °F | 2.88 in. |
| September | 66.2 °F | 96.5 °F | 1.5 in. |
| October | 54.4 °F | 87.8 °F | 0.72 in. |
| November | 43.5 °F | 76.2 °F | 0.56 in. |
| December | 36.5 °F | 66.3 °F | 1.39 in. |
| Annual | 53 °F | 84.8 °F | 13.28 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 30-40 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 | Moderate Drought |
| Köppen Climate Classification | BWh - Hot Desert Climate |