Mecca, California has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 58.9 °F (low) to 86.9 °F (high). Annual precipitation averages 2.7 Inches. Mecca is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.7 °F | 69.4 °F | 0.63 in. |
| February | 46.1 °F | 72.9 °F | 0.47 in. |
| March | 51.9 °F | 79.1 °F | 0.29 in. |
| April | 56.9 °F | 85.2 °F | 0.06 in. |
| May | 64.1 °F | 91.9 °F | 0.03 in. |
| June | 70.0 °F | 100.4 °F | 0.0 in. |
| July | 77.3 °F | 104.5 °F | 0.1 in. |
| August | 77.6 °F | 104.5 °F | 0.09 in. |
| September | 70.7 °F | 100.1 °F | 0.23 in. |
| October | 60.7 °F | 89.7 °F | 0.25 in. |
| November | 48.1 °F | 77.5 °F | 0.17 in. |
| December | 41.0 °F | 68.1 °F | 0.4 in. |
| Annual | 58.9 °F | 86.9 °F | 2.72 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BWh - Hot Desert Climate |