| 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: | November 21 - 30 | |
| Average Last Frost Date: | March 11 - 20 | |
| 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 85755 - Tucson, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 39 | 43 | 48 | 56 | 65 | 71 | 70 | 65 | 54 | 42 | 37 | 52 |
| Avg Max Temp (°F) | 64 | 68 | 73 | 81 | 89 | 99 | 99 | 97 | 93 | 84 | 72 | 64 | 82 |
| Avg Precip (In.) | 1.27 | 1.11 | 1.19 | .38 | .29 | .27 | 2.19 | 2.5 | 1.41 | 1.29 | .9 | 1.21 | 14 |