Brooks, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 9.4 °C (low) to 24.7 °C (high). Annual precipitation averages 496.3 Millimeters. Brooks is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.6 °C | 14.4 °C | 103.38 mm |
| February | 4.7 °C | 16.6 °C | 98.3 mm |
| March | 6.1 °C | 19.3 °C | 63.25 mm |
| April | 7.8 °C | 22.6 °C | 30.73 mm |
| May | 11.1 °C | 27.4 °C | 22.86 mm |
| June | 14.2 °C | 32.1 °C | 4.06 mm |
| July | 15.9 °C | 35.4 °C | 0 mm |
| August | 15.2 °C | 35.2 °C | 0.51 mm |
| September | 13.9 °C | 33.1 °C | 2.54 mm |
| October | 10.3 °C | 26.9 °C | 21.59 mm |
| November | 6.1 °C | 19.2 °C | 46.99 mm |
| December | 3.6 °C | 14.3 °C | 102.11 mm |
| Annual | 9.4 °C | 24.7 °C | 496.32 mm |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |