Tempe, Arizona has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 15.5 °C (low) to 30.4 °C (high). Annual precipitation averages 224.5 Millimeters. Tempe is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.9 °C | 19.8 °C | 27.43 mm |
| February | 7.5 °C | 21.7 °C | 26.42 mm |
| March | 10.2 °C | 25.3 °C | 24.89 mm |
| April | 13.4 °C | 29.3 °C | 7.37 mm |
| May | 18.2 °C | 34.4 °C | 3.56 mm |
| June | 22.8 °C | 39.6 °C | 1.27 mm |
| July | 26.8 °C | 41 °C | 25.65 mm |
| August | 26.6 °C | 40.3 °C | 33.02 mm |
| September | 23.1 °C | 37.8 °C | 19.56 mm |
| October | 16.3 °C | 31.9 °C | 14.73 mm |
| November | 9.9 °C | 24.8 °C | 15.24 mm |
| December | 5.5 °C | 19.2 °C | 25.4 mm |
| Annual | 15.5 °C | 30.4 °C | 224.54 mm |
| Average First Frost Date | Frost Rare |
| 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 |