| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F | |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F | |
| Average First Frost Date: | Jan. 11 - Jan. 20 | |
| Average Last Frost Date: | Jan. 21 - Jan. 31 | |
| Koppen-Geiger Climate Zone: | BSh - Hot Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 151 - 180 days Over 86°F |
Annual Climate Data for ZIP Code 85209 - Mesa, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 39 | 43 | 46 | 50 | 59 | 68 | 76 | 74 | 68 | 57 | 46 | 40 | 55 |
| Avg Max Temp (°F) | 66 | 71 | 75 | 83 | 92 | 102 | 104 | 102 | 98 | 87 | 74 | 66 | 85 |
| Avg Precip (In.) | 1.04 | 1.06 | 1.24 | .33 | .2 | .07 | .93 | 1.24 | .86 | .86 | .84 | 1.06 | 9.74 |