Elgin, Arizona has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 7.7 °C (low) to 24.5 °C (high). Annual precipitation averages 399.3 Millimeters. Elgin is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.8 °C | 15.8 °C | 25.15 mm |
| February | 0.6 °C | 17.2 °C | 21.08 mm |
| March | 2.9 °C | 20.3 °C | 26.42 mm |
| April | 5.4 °C | 24 °C | 9.65 mm |
| May | 9.5 °C | 28.4 °C | 5.33 mm |
| June | 15.3 °C | 33.3 °C | 11.94 mm |
| July | 17.7 °C | 32.3 °C | 87.38 mm |
| August | 16.9 °C | 30.9 °C | 97.28 mm |
| September | 14.1 °C | 29.7 °C | 46.99 mm |
| October | 8.3 °C | 25.9 °C | 22.86 mm |
| November | 2.9 °C | 20.5 °C | 17.53 mm |
| December | -0.6 °C | 15.6 °C | 27.69 mm |
| Annual | 7.7 °C | 24.5 °C | 399.3 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSh - Hot Semi-Arid Climate |