Bylas, Arizona has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 8.6 °C (low) to 28.3 °C (high). Annual precipitation averages 240 Millimeters. Bylas is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.4 °C | 17.2 °C | 25.4 mm |
| February | 0.4 °C | 19.7 °C | 25.4 mm |
| March | 3.1 °C | 23.6 °C | 14.73 mm |
| April | 6.3 °C | 28.3 °C | 7.87 mm |
| May | 11.1 °C | 33.3 °C | 4.83 mm |
| June | 16.6 °C | 38.2 °C | 4.32 mm |
| July | 21.1 °C | 38.3 °C | 37.08 mm |
| August | 20.3 °C | 37.2 °C | 39.62 mm |
| September | 16.3 °C | 34.7 °C | 23.88 mm |
| October | 8.5 °C | 29.6 °C | 18.03 mm |
| November | 2.2 °C | 22.4 °C | 13.46 mm |
| December | -1.9 °C | 16.6 °C | 25.4 mm |
| Annual | 8.6 °C | 28.3 °C | 240.02 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |