Brooks, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 48.9 °F (low) to 76.5 °F (high). Annual precipitation averages 19.5 Inches. 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 | 38.5 °F | 57.9 °F | 4.07 in. |
| February | 40.4 °F | 61.9 °F | 3.87 in. |
| March | 43.0 °F | 66.7 °F | 2.49 in. |
| April | 46.1 °F | 72.7 °F | 1.21 in. |
| May | 51.9 °F | 81.4 °F | 0.9 in. |
| June | 57.5 °F | 89.8 °F | 0.16 in. |
| July | 60.7 °F | 95.8 °F | 0.0 in. |
| August | 59.3 °F | 95.3 °F | 0.02 in. |
| September | 57.0 °F | 91.5 °F | 0.1 in. |
| October | 50.5 °F | 80.5 °F | 0.85 in. |
| November | 43.0 °F | 66.6 °F | 1.85 in. |
| December | 38.4 °F | 57.8 °F | 4.02 in. |
| Annual | 48.9 °F | 76.5 °F | 19.54 in. |
| 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 : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |