| 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 9a: 20F to 25F | |
| Average First Frost Date: | Jan. 21 - Jan. 31 | |
| Average Last Frost Date: | Jan. 21 - Jan. 31 | |
| Koppen-Geiger Climate Zone: | BWh - Hot Desert Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 181 - 210 days Over 86°F |
Annual Climate Data for ZIP Code 85045 - Phoenix, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 42 | 46 | 52 | 60 | 69 | 77 | 76 | 69 | 56 | 44 | 38 | 56 |
| Avg Max Temp (°F) | 66 | 71 | 76 | 85 | 94 | 104 | 106 | 104 | 99 | 88 | 75 | 66 | 86 |
| Avg Precip (In.) | .84 | .91 | 1.12 | .27 | .17 | .13 | 1.05 | 1.04 | .8 | .81 | .71 | .94 | 8.78 |