Palominas, Arizona has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 47.1 °F (low) to 79.2 °F (high). Annual precipitation averages 13.5 Inches. Palominas 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 | 30.7 °F | 62.6 °F | 0.84 in. |
| February | 33.8 °F | 65.6 °F | 0.68 in. |
| March | 38.4 °F | 71.8 °F | 0.59 in. |
| April | 43.3 °F | 79.4 °F | 0.21 in. |
| May | 51.0 °F | 87.3 °F | 0.2 in. |
| June | 61.0 °F | 95.3 °F | 0.51 in. |
| July | 66.3 °F | 93.5 °F | 3.23 in. |
| August | 64.9 °F | 91.3 °F | 3.35 in. |
| September | 59.4 °F | 89.0 °F | 1.59 in. |
| October | 47.7 °F | 81.6 °F | 0.68 in. |
| November | 37.5 °F | 71.1 °F | 0.74 in. |
| December | 30.7 °F | 62.1 °F | 0.9 in. |
| Annual | 47.1 °F | 79.2 °F | 13.52 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 |