| 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 | |
| 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: | Abnormally Dry | |
| Heat Zone Days: | 151 - 180 days Over 86°F |
Annual Climate Data for ZIP Code 85730 - Tucson, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 41 | 44 | 49 | 57 | 66 | 72 | 71 | 66 | 55 | 43 | 38 | 53 |
| Avg Max Temp (°F) | 65 | 69 | 74 | 82 | 90 | 97 | 100 | 98 | 94 | 85 | 73 | 65 | 83 |
| Avg Precip (In.) | 1.22 | 1.1 | 1.07 | .33 | .27 | .26 | 2.09 | 2.46 | 1.42 | 1.24 | .79 | 1.16 | 13.42 |