Adelanto, California has a Hot-Summer Mediterranean Climate climate (Köppen classification: Csa). Average annual temperatures range from 47.8 °F (low) to 77.2 °F (high). Annual precipitation averages 4.4 Inches. 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 | 33.7 °F | 59.0 °F | 0.85 in. |
| February | 36.0 °F | 61.8 °F | 0.94 in. |
| March | 40.1 °F | 67.6 °F | 0.58 in. |
| April | 44.5 °F | 73.5 °F | 0.22 in. |
| May | 51.4 °F | 81.6 °F | 0.13 in. |
| June | 58.9 °F | 91.6 °F | 0.03 in. |
| July | 65.3 °F | 98.3 °F | 0.18 in. |
| August | 64.6 °F | 97.9 °F | 0.12 in. |
| September | 58.7 °F | 91.3 °F | 0.15 in. |
| October | 48.9 °F | 79.4 °F | 0.24 in. |
| November | 38.6 °F | 67.0 °F | 0.27 in. |
| December | 33.0 °F | 57.8 °F | 0.69 in. |
| Annual | 47.8 °F | 77.2 °F | 4.4 in. |
| 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 : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csa - Hot-Summer Mediterranean Climate |