| 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: | 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 85718 - Tucson, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 40 | 44 | 49 | 57 | 67 | 73 | 72 | 66 | 55 | 43 | 37 | 53 |
| Avg Max Temp (°F) | 66 | 70 | 74 | 82 | 91 | 100 | 100 | 99 | 95 | 85 | 74 | 66 | 84 |
| Avg Precip (In.) | 1.11 | 1.04 | 1.01 | .35 | .21 | .24 | 1.92 | 2.19 | 1.26 | 1.2 | .78 | 1.16 | 12.48 |