Anza, California has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 5.9 °C (low) to 22.4 °C (high). Annual precipitation averages 334.5 Millimeters. Anza is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.3 °C | 14.3 °C | 62.99 mm |
| February | 1.1 °C | 14.4 °C | 72.9 mm |
| March | 2.1 °C | 17 °C | 46.23 mm |
| April | 3 °C | 19.2 °C | 23.62 mm |
| May | 5.5 °C | 23.5 °C | 9.91 mm |
| June | 8.8 °C | 29.2 °C | 1.27 mm |
| July | 13.6 °C | 32.8 °C | 11.68 mm |
| August | 13.7 °C | 33 °C | 7.87 mm |
| September | 11.3 °C | 29.9 °C | 11.43 mm |
| October | 7.1 °C | 23.9 °C | 14.48 mm |
| November | 3.3 °C | 18.4 °C | 23.37 mm |
| December | 0.5 °C | 13.6 °C | 48.77 mm |
| Annual | 5.9 °C | 22.4 °C | 334.52 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 | Normal |
| Köppen Climate Classification | BSh - Hot Semi-Arid Climate |