Arivaca, Arizona has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 8.3 °C (low) to 27.1 °C (high). Annual precipitation averages 457.5 Millimeters. 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 | -0.2 °C | 18.2 °C | 29.46 mm |
| February | 1 °C | 19.4 °C | 34.54 mm |
| March | 3.4 °C | 22.5 °C | 24.64 mm |
| April | 5.7 °C | 26.2 °C | 12.19 mm |
| May | 9.7 °C | 30.8 °C | 7.62 mm |
| June | 15.2 °C | 36 °C | 10.92 mm |
| July | 19.4 °C | 35.3 °C | 98.3 mm |
| August | 18.8 °C | 34.3 °C | 93.22 mm |
| September | 15.4 °C | 32.7 °C | 62.74 mm |
| October | 8.8 °C | 28.7 °C | 29.97 mm |
| November | 3.3 °C | 22.9 °C | 18.54 mm |
| December | -0.4 °C | 17.9 °C | 35.31 mm |
| Annual | 8.3 °C | 27.1 °C | 457.45 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSh - Hot Semi-Arid Climate |