| 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. 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 85705 - Tucson, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 38 | 40 | 45 | 50 | 58 | 68 | 74 | 73 | 67 | 56 | 44 | 38 | 54 |
| Avg Max Temp (°F) | 67 | 71 | 75 | 83 | 92 | 100 | 101 | 99 | 96 | 86 | 74 | 67 | 84 |
| Avg Precip (In.) | .93 | .98 | .91 | .34 | .21 | .28 | 1.91 | 2.13 | 1.17 | 1.06 | .72 | 1.07 | 11.72 |