| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F | |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F | |
| 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 85387 - Surprise, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 39 | 42 | 46 | 51 | 60 | 68 | 76 | 75 | 68 | 56 | 44 | 39 | 55 |
| Avg Max Temp (°F) | 67 | 72 | 77 | 85 | 94 | 104 | 106 | 105 | 100 | 89 | 76 | 68 | 87 |
| Avg Precip (In.) | 1.14 | 1.2 | 1.16 | .28 | .13 | .06 | .83 | 1.26 | .87 | .78 | .77 | 1.04 | 9.52 |