Hidden Hills, California has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 11.4 °C (low) to 25.3 °C (high). Annual precipitation averages 448.1 Millimeters. Hidden Hills is located in USDA Plant Hardiness Zone 10a. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 21 - Dec. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.1 °C | 19 °C | 105.92 mm |
| February | 7.8 °C | 19.2 °C | 114.3 mm |
| March | 8.6 °C | 20.8 °C | 72.64 mm |
| April | 9.6 °C | 23.3 °C | 22.61 mm |
| May | 11.6 °C | 25.3 °C | 10.92 mm |
| June | 13.5 °C | 28.5 °C | 1.02 mm |
| July | 15.8 °C | 32.5 °C | 0.76 mm |
| August | 16.2 °C | 33.6 °C | 0.51 mm |
| September | 15.3 °C | 31.8 °C | 4.32 mm |
| October | 13 °C | 27.7 °C | 18.03 mm |
| November | 10.1 °C | 22.8 °C | 21.59 mm |
| December | 7.7 °C | 18.8 °C | 75.44 mm |
| Annual | 11.4 °C | 25.3 °C | 448.06 mm |
| Average First Frost Date | Dec. 21 - Dec. 31 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | Frost Rare |
| 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 | Csb - Warm-Summer Mediterranean Climate |