Vail, Arizona has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 10.9 °C (low) to 27.7 °C (high). Annual precipitation averages 360.7 Millimeters. Vail is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 2.1 °C | 18.3 °C | 26.42 mm |
| February | 3.4 °C | 19.6 °C | 38.35 mm |
| March | 6.1 °C | 23.1 °C | 27.94 mm |
| April | 8.7 °C | 27 °C | 11.43 mm |
| May | 12.8 °C | 31.8 °C | 5.33 mm |
| June | 18.5 °C | 37.1 °C | 9.65 mm |
| July | 21.4 °C | 36.5 °C | 65.79 mm |
| August | 20.7 °C | 35.4 °C | 66.8 mm |
| September | 17.8 °C | 33.6 °C | 42.93 mm |
| October | 11.7 °C | 29.1 °C | 18.29 mm |
| November | 5.9 °C | 23.2 °C | 16.26 mm |
| December | 2 °C | 17.8 °C | 31.5 mm |
| Annual | 10.9 °C | 27.7 °C | 360.69 mm |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | BSh - Hot Semi-Arid Climate |