Mayer, Arizona has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 7.9 °C (low) to 23.4 °C (high). Annual precipitation averages 419.1 Millimeters. Mayer is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.4 °C | 13.4 °C | 49.53 mm |
| February | 0.6 °C | 14.7 °C | 55.12 mm |
| March | 2.9 °C | 18 °C | 39.88 mm |
| April | 5.5 °C | 21.9 °C | 12.95 mm |
| May | 9.7 °C | 26.7 °C | 9.65 mm |
| June | 14.5 °C | 32.6 °C | 6.1 mm |
| July | 18.4 °C | 34.2 °C | 63.25 mm |
| August | 18.1 °C | 33.1 °C | 49.02 mm |
| September | 14.6 °C | 30.2 °C | 35.56 mm |
| October | 8.6 °C | 24.7 °C | 25.65 mm |
| November | 3.1 °C | 18.4 °C | 30.23 mm |
| December | -0.7 °C | 12.8 °C | 42.16 mm |
| Annual | 7.9 °C | 23.4 °C | 419.1 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 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 | Severe Drought |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |