| 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: | 181 - 210 days Over 86°F |
Annual Climate Data for ZIP Code 85281 - Tempe, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 43 | 47 | 52 | 60 | 68 | 76 | 75 | 69 | 57 | 45 | 39 | 56 |
| Avg Max Temp (°F) | 67 | 71 | 76 | 84 | 93 | 102 | 104 | 103 | 98 | 88 | 75 | 67 | 86 |
| Avg Precip (In.) | .98 | 1.01 | 1.14 | .27 | .2 | .09 | .88 | 1.17 | .85 | .82 | .78 | 1 | 9.19 |