| 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 Zone 10a: 30°F to 35°F | |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F | |
| Average First Frost Date: | No Frost | |
| 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 85042 - Phoenix, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 43 | 47 | 53 | 61 | 70 | 77 | 76 | 70 | 58 | 46 | 40 | 57 |
| Avg Max Temp (°F) | 66 | 71 | 76 | 84 | 93 | 102 | 104 | 103 | 98 | 87 | 74 | 66 | 85 |
| Avg Precip (In.) | .91 | .94 | 1.2 | .29 | .19 | .13 | .91 | 1.06 | .8 | .81 | .75 | .95 | 8.94 |