| 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 85704 - Tucson, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 36 | 39 | 43 | 48 | 57 | 67 | 73 | 72 | 66 | 54 | 43 | 37 | 53 |
| Avg Max Temp (°F) | 67 | 71 | 75 | 83 | 92 | 101 | 101 | 99 | 96 | 86 | 75 | 67 | 84 |
| Avg Precip (In.) | 1.01 | 1 | .97 | .35 | .21 | .28 | 1.94 | 2.17 | 1.15 | 1.09 | .77 | 1.1 | 12.04 |