| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F Zone 10a: 30°F to 35°F | |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F | |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F | |
| Average First Frost Date: | Frost Rare | |
| Average Last Frost Date: | Frost Rare | |
| Koppen-Geiger Climate Zone: | BWh - Hot Desert Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 151 - 180 days Over 86°F |
Annual Climate Data for ZIP Code 85310 - Glendale, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 43 | 47 | 52 | 60 | 69 | 77 | 76 | 69 | 58 | 45 | 39 | 56 |
| Avg Max Temp (°F) | 66 | 71 | 75 | 83 | 92 | 102 | 105 | 103 | 98 | 87 | 74 | 66 | 85 |
| Avg Precip (In.) | 1.05 | 1.24 | 1.35 | .3 | .18 | .08 | .77 | 1.1 | .75 | .73 | .82 | 1.04 | 9.41 |