Adelanto, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 8.8 °C (low) to 25.1 °C (high). Annual precipitation averages 111.8 Millimeters. Adelanto is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.9 °C | 15 °C | 21.59 mm |
| February | 2.2 °C | 16.6 °C | 23.88 mm |
| March | 4.5 °C | 19.8 °C | 14.73 mm |
| April | 6.9 °C | 23.1 °C | 5.59 mm |
| May | 10.8 °C | 27.6 °C | 3.3 mm |
| June | 14.9 °C | 33.1 °C | 0.76 mm |
| July | 18.5 °C | 36.8 °C | 4.57 mm |
| August | 18.1 °C | 36.6 °C | 3.05 mm |
| September | 14.8 °C | 32.9 °C | 3.81 mm |
| October | 9.4 °C | 26.3 °C | 6.1 mm |
| November | 3.7 °C | 19.4 °C | 6.86 mm |
| December | 0.6 °C | 14.3 °C | 17.53 mm |
| Annual | 8.8 °C | 25.1 °C | 111.77 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |