| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Jan. 1 - Jan. 10 | |
| 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 85749 - Tucson, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 40 | 43 | 48 | 56 | 65 | 72 | 70 | 65 | 54 | 42 | 37 | 52 |
| Avg Max Temp (°F) | 66 | 70 | 74 | 82 | 91 | 100 | 101 | 99 | 95 | 86 | 74 | 66 | 84 |
| Avg Precip (In.) | 1.24 | 1.08 | 1.14 | .32 | .23 | .26 | 2 | 2.44 | 1.38 | 1.19 | .84 | 1.16 | 13.29 |