Bootjack, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 8.5 °C (low) to 22.9 °C (high). Annual precipitation averages 754.1 Millimeters. Bootjack is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.3 °C | 13.8 °C | 154.69 mm |
| February | 2.8 °C | 14.6 °C | 132.33 mm |
| March | 4.4 °C | 16.9 °C | 115.32 mm |
| April | 5.7 °C | 19.2 °C | 61.98 mm |
| May | 9.3 °C | 24.6 °C | 33.53 mm |
| June | 13.3 °C | 30.1 °C | 10.16 mm |
| July | 17.3 °C | 34.3 °C | 2.54 mm |
| August | 16.8 °C | 34 °C | 3.3 mm |
| September | 14.2 °C | 30.9 °C | 5.84 mm |
| October | 9.4 °C | 24.9 °C | 34.54 mm |
| November | 4.9 °C | 18.2 °C | 69.6 mm |
| December | 1.8 °C | 13.6 °C | 130.3 mm |
| Annual | 8.5 °C | 22.9 °C | 754.13 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 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 |