Olancha, California has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 7.4 °C (low) to 24.3 °C (high). Annual precipitation averages 141.2 Millimeters. Olancha is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.7 °C | 12.9 °C | 29.72 mm |
| February | 0.3 °C | 14.9 °C | 29.97 mm |
| March | 2.9 °C | 18.8 °C | 16.51 mm |
| April | 5.8 °C | 22.9 °C | 4.83 mm |
| May | 10.6 °C | 27.7 °C | 4.32 mm |
| June | 15 °C | 33.5 °C | 2.79 mm |
| July | 18.1 °C | 36.8 °C | 6.86 mm |
| August | 17.3 °C | 36.2 °C | 3.3 mm |
| September | 13.6 °C | 32.4 °C | 4.06 mm |
| October | 7.8 °C | 25.5 °C | 7.11 mm |
| November | 1.2 °C | 17.9 °C | 6.35 mm |
| December | -2.6 °C | 12.2 °C | 25.4 mm |
| Annual | 7.4 °C | 24.3 °C | 141.22 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BWh - Hot Desert Climate |