Lake Isabella, California has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 9.2 °C (low) to 24.5 °C (high). Annual precipitation averages 332 Millimeters. Lake Isabella 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 | 2.1 °C | 15.3 °C | 67.31 mm |
| February | 2.9 °C | 16.3 °C | 71.37 mm |
| March | 4.9 °C | 18.6 °C | 56.9 mm |
| April | 7 °C | 21.1 °C | 20.07 mm |
| May | 11 °C | 25.9 °C | 11.43 mm |
| June | 15.2 °C | 31.6 °C | 4.32 mm |
| July | 18.6 °C | 36.4 °C | 4.32 mm |
| August | 17.7 °C | 36.2 °C | 4.06 mm |
| September | 15 °C | 32.3 °C | 2.03 mm |
| October | 9.6 °C | 25.8 °C | 11.68 mm |
| November | 4.7 °C | 19.7 °C | 37.08 mm |
| December | 1.6 °C | 14.7 °C | 41.4 mm |
| Annual | 9.2 °C | 24.5 °C | 331.97 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 | BWh - Hot Desert Climate |