Chino Hills, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 11.4 °C (low) to 25.2 °C (high). Annual precipitation averages 424.7 Millimeters. Chino Hills is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.9 °C | 19.7 °C | 91.44 mm |
| February | 7.3 °C | 19.9 °C | 109.47 mm |
| March | 8.4 °C | 21.6 °C | 68.58 mm |
| April | 9.7 °C | 22.9 °C | 21.08 mm |
| May | 12 °C | 24.8 °C | 9.65 mm |
| June | 14 °C | 27.8 °C | 2.79 mm |
| July | 16.4 °C | 31.4 °C | 1.78 mm |
| August | 16.8 °C | 32.6 °C | 0.25 mm |
| September | 15.9 °C | 31.2 °C | 3.56 mm |
| October | 13 °C | 27.3 °C | 21.34 mm |
| November | 9.2 °C | 23.3 °C | 25.4 mm |
| December | 6.6 °C | 19.3 °C | 69.34 mm |
| Annual | 11.4 °C | 25.2 °C | 424.68 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 10a : -1.1°C to 1.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |