Arivaca, Arizona has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 47 °F (low) to 80.7 °F (high). Annual precipitation averages 18 Inches. Arivaca is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.7 °F | 64.8 °F | 1.16 in. |
| February | 33.8 °F | 66.9 °F | 1.36 in. |
| March | 38.2 °F | 72.5 °F | 0.97 in. |
| April | 42.2 °F | 79.2 °F | 0.48 in. |
| May | 49.4 °F | 87.5 °F | 0.3 in. |
| June | 59.4 °F | 96.8 °F | 0.43 in. |
| July | 66.9 °F | 95.5 °F | 3.87 in. |
| August | 65.8 °F | 93.7 °F | 3.67 in. |
| September | 59.8 °F | 90.8 °F | 2.47 in. |
| October | 47.8 °F | 83.6 °F | 1.18 in. |
| November | 37.9 °F | 73.2 °F | 0.73 in. |
| December | 31.3 °F | 64.2 °F | 1.39 in. |
| Annual | 47 °F | 80.7 °F | 18.01 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| 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 | Moderate Drought |
| Köppen Climate Classification | BSh - Hot Semi-Arid Climate |