Glendale, Arizona has a Hot Desert Climate climate (Köppen classification: BWh). Average annual temperatures range from 60 °F (low) to 86.6 °F (high). Annual precipitation averages 9.3 Inches. Glendale is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 42.7 °F | 67.2 °F | 1.14 in. |
| February | 45.6 °F | 70.7 °F | 1.4 in. |
| March | 50.6 °F | 77.3 °F | 1.05 in. |
| April | 55.9 °F | 84.7 °F | 0.32 in. |
| May | 65.0 °F | 93.7 °F | 0.2 in. |
| June | 73.7 °F | 103.3 °F | 0.07 in. |
| July | 80.7 °F | 105.9 °F | 0.77 in. |
| August | 80.0 °F | 104.7 °F | 0.99 in. |
| September | 73.6 °F | 100.0 °F | 0.76 in. |
| October | 61.1 °F | 89.1 °F | 0.82 in. |
| November | 49.6 °F | 76.1 °F | 0.68 in. |
| December | 42.0 °F | 66.2 °F | 1.14 in. |
| Annual | 60 °F | 86.6 °F | 9.34 in. |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9b : 25°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BWh - Hot Desert Climate |