| 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 85374 - Surprise, 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 | 69 | 57 | 45 | 39 | 57 |
| Avg Max Temp (°F) | 68 | 72 | 77 | 86 | 95 | 104 | 107 | 105 | 100 | 90 | 76 | 68 | 87 |
| Avg Precip (In.) | 1.06 | 1.12 | 1.14 | .28 | .14 | .06 | .78 | 1.09 | .79 | .79 | .71 | 1.06 | 9.01 |