| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 9a: 20°F to 25°F 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: | 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 85757 - Tucson, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 38 | 42 | 47 | 55 | 65 | 72 | 70 | 65 | 53 | 41 | 36 | 52 |
| Avg Max Temp (°F) | 66 | 70 | 75 | 83 | 91 | 99 | 101 | 98 | 95 | 86 | 74 | 66 | 84 |
| Avg Precip (In.) | .98 | .95 | .9 | .35 | .22 | .27 | 2.07 | 2.3 | 1.3 | 1.13 | .71 | 1.07 | 12.25 |