West Rancho Dominguez, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 13.2 °C (low) to 22.3 °C (high). Annual precipitation averages 336.3 Millimeters. West Rancho Dominguez is located in USDA Plant Hardiness Zone 10b. The growing season typically runs from the last frost around Frost Rare through the first frost around Jan. 21 - Jan. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.1 °C | 19.2 °C | 79.76 mm |
| February | 9.6 °C | 18.9 °C | 87.88 mm |
| March | 10.8 °C | 19.4 °C | 51.05 mm |
| April | 11.9 °C | 21.1 °C | 17.02 mm |
| May | 14 °C | 21.8 °C | 5.84 mm |
| June | 15.8 °C | 23.2 °C | 1.78 mm |
| July | 17.5 °C | 25.5 °C | 1.02 mm |
| August | 17.8 °C | 26.5 °C | 0.51 mm |
| September | 17.2 °C | 26.3 °C | 2.54 mm |
| October | 15 °C | 24.7 °C | 12.95 mm |
| November | 11.4 °C | 21.8 °C | 18.8 mm |
| December | 8.8 °C | 19 °C | 57.15 mm |
| Annual | 13.2 °C | 22.3 °C | 336.3 mm |
| Average First Frost Date | Jan. 21 - Jan. 31 |
| Average Last Frost Date | Frost Rare |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10b : 1.7°C to 4.4°C |
| Plant Hardiness Zone - 2012 | Zone 10b : 1.7°C to 4.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |