Phoenix, Arizona has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 15.6 °C (low) to 30.5 °C (high). Annual precipitation averages 220.2 Millimeters. Phoenix is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6 °C | 19.8 °C | 26.16 mm |
| February | 7.7 °C | 21.7 °C | 29.97 mm |
| March | 10.5 °C | 25.4 °C | 26.67 mm |
| April | 13.6 °C | 29.6 °C | 7.11 mm |
| May | 18.4 °C | 34.5 °C | 4.06 mm |
| June | 23.1 °C | 39.7 °C | 1.02 mm |
| July | 27 °C | 41.1 °C | 20.83 mm |
| August | 26.7 °C | 40.4 °C | 28.19 mm |
| September | 23.1 °C | 37.9 °C | 17.27 mm |
| October | 16.2 °C | 32.1 °C | 16 mm |
| November | 9.7 °C | 24.8 °C | 16.51 mm |
| December | 5.5 °C | 19.3 °C | 26.42 mm |
| Annual | 15.6 °C | 30.5 °C | 220.21 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BWh - Hot Desert Climate |