| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F | |
| 1990 Hardiness Zone: | Zone 9a: 20F to 25F | |
| Average First Frost Date: | Nov. 11 - Nov. 20 | |
| Average Last Frost Date: | Mar. 21 - Mar. 31 | |
| Koppen-Geiger Climate Zone: | BSh - Hot Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 85622 - Green Valley, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 35 | 38 | 41 | 46 | 54 | 63 | 70 | 69 | 63 | 52 | 41 | 35 | 51 |
| Avg Max Temp (°F) | 66 | 69 | 74 | 82 | 90 | 95 | 99 | 97 | 94 | 85 | 74 | 66 | 82 |
| Avg Precip (In.) | 1.14 | 1.02 | .95 | .32 | .26 | .31 | 2.57 | 2.77 | 1.53 | 1.27 | .73 | 1.15 | 14.02 |