| 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: | 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 85203 - Mesa, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 39 | 42 | 46 | 50 | 58 | 66 | 75 | 74 | 67 | 56 | 44 | 39 | 55 |
| Avg Max Temp (°F) | 67 | 71 | 76 | 84 | 93 | 102 | 105 | 103 | 98 | 88 | 75 | 67 | 86 |
| Avg Precip (In.) | .97 | 1 | 1.16 | .31 | .18 | .07 | .88 | 1.12 | .84 | .79 | .77 | .97 | 9.05 |