Palominas, Arizona has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 8.4 °C (low) to 26.2 °C (high). Annual precipitation averages 343.4 Millimeters. 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 | -0.7 °C | 17 °C | 21.34 mm |
| February | 1 °C | 18.7 °C | 17.27 mm |
| March | 3.6 °C | 22.1 °C | 14.99 mm |
| April | 6.3 °C | 26.3 °C | 5.33 mm |
| May | 10.6 °C | 30.7 °C | 5.08 mm |
| June | 16.1 °C | 35.2 °C | 12.95 mm |
| July | 19.1 °C | 34.2 °C | 82.04 mm |
| August | 18.3 °C | 32.9 °C | 85.09 mm |
| September | 15.2 °C | 31.7 °C | 40.39 mm |
| October | 8.7 °C | 27.6 °C | 17.27 mm |
| November | 3.1 °C | 21.7 °C | 18.8 mm |
| December | -0.7 °C | 16.7 °C | 22.86 mm |
| Annual | 8.4 °C | 26.2 °C | 343.41 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |