Sehili, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.4 °C (low) to 17.1 °C (high). Annual precipitation averages 380.5 Millimeters. Sehili is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.5 °C | 5.4 °C | 41.4 mm |
| February | -5.7 °C | 7.5 °C | 37.59 mm |
| March | -2.9 °C | 11.5 °C | 35.81 mm |
| April | 0.5 °C | 15.7 °C | 22.1 mm |
| May | 4.9 °C | 20.9 °C | 19.81 mm |
| June | 10.1 °C | 27.7 °C | 7.87 mm |
| July | 13.5 °C | 29.5 °C | 43.43 mm |
| August | 13.1 °C | 27.9 °C | 42.93 mm |
| September | 9.4 °C | 24.2 °C | 37.34 mm |
| October | 2.8 °C | 17.7 °C | 27.94 mm |
| November | -2.6 °C | 10.9 °C | 25.15 mm |
| December | -7.4 °C | 5.7 °C | 39.12 mm |
| Annual | 2.4 °C | 17.1 °C | 380.49 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |