Maricopa, California has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 51.6 °F (low) to 77.8 °F (high). Annual precipitation averages 6.7 Inches. Maricopa is located in USDA Plant Hardiness Zone 9b. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 1 - Dec. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 38.6 °F | 58.2 °F | 1.16 in. |
| February | 41.5 °F | 63.0 °F | 1.32 in. |
| March | 45.1 °F | 68.5 °F | 1.37 in. |
| April | 48.3 °F | 75.7 °F | 0.45 in. |
| May | 54.9 °F | 84.0 °F | 0.36 in. |
| June | 61.1 °F | 92.3 °F | 0.09 in. |
| July | 67.9 °F | 98.2 °F | 0.01 in. |
| August | 66.0 °F | 97.0 °F | 0.02 in. |
| September | 61.1 °F | 91.5 °F | 0.06 in. |
| October | 52.8 °F | 80.2 °F | 0.26 in. |
| November | 43.7 °F | 67.0 °F | 0.6 in. |
| December | 38.0 °F | 58.4 °F | 0.99 in. |
| Annual | 51.6 °F | 77.8 °F | 6.69 in. |
| Average First Frost Date | Dec. 1 - Dec. 10 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BWk - Cold Desert Climate |