| 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. 21 - Jan. 31 | |
| 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 85711 - Tucson, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 41 | 44 | 50 | 58 | 67 | 73 | 72 | 67 | 56 | 44 | 38 | 54 |
| Avg Max Temp (°F) | 66 | 70 | 74 | 82 | 91 | 99 | 101 | 98 | 95 | 85 | 74 | 66 | 83 |
| Avg Precip (In.) | 1.14 | 1.04 | 1.03 | .34 | .24 | .27 | 1.99 | 2.35 | 1.31 | 1.19 | .74 | 1.12 | 12.75 |