Oak Hills, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 8 °C (low) to 23 °C (high). Annual precipitation averages 318 Millimeters. Oak Hills 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.4 °C | 14.5 °C | 61.47 mm |
| February | 1.8 °C | 15.6 °C | 91.95 mm |
| March | 3.4 °C | 18.6 °C | 44.45 mm |
| April | 5.6 °C | 20.2 °C | 15.75 mm |
| May | 9.2 °C | 24.5 °C | 4.06 mm |
| June | 12.9 °C | 29.6 °C | 1.02 mm |
| July | 16.9 °C | 33.1 °C | 4.06 mm |
| August | 16.4 °C | 33.2 °C | 2.54 mm |
| September | 14.2 °C | 30.2 °C | 6.1 mm |
| October | 8.9 °C | 24.1 °C | 11.43 mm |
| November | 4.2 °C | 18.9 °C | 18.8 mm |
| December | 1.2 °C | 13.9 °C | 56.39 mm |
| Annual | 8 °C | 23 °C | 318.02 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |