Miracle Valley, Arizona has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 47.2 °F (low) to 78.7 °F (high). Annual precipitation averages 14.6 Inches. Miracle Valley is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 30.9 °F | 62.1 °F | 0.82 in. |
| February | 33.9 °F | 65.0 °F | 0.67 in. |
| March | 39.0 °F | 71.3 °F | 0.72 in. |
| April | 43.8 °F | 79.1 °F | 0.23 in. |
| May | 51.3 °F | 86.9 °F | 0.22 in. |
| June | 60.9 °F | 94.6 °F | 0.6 in. |
| July | 65.8 °F | 92.9 °F | 3.32 in. |
| August | 64.5 °F | 90.6 °F | 3.9 in. |
| September | 59.1 °F | 88.1 °F | 1.66 in. |
| October | 47.9 °F | 81.0 °F | 0.78 in. |
| November | 37.7 °F | 70.7 °F | 0.72 in. |
| December | 31.1 °F | 61.5 °F | 0.92 in. |
| Annual | 47.2 °F | 78.7 °F | 14.56 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |