| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F | |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| 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 85621 - Nogales, AZ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 29 | 31 | 35 | 39 | 46 | 55 | 64 | 63 | 57 | 44 | 34 | 29 | 44 |
| Avg Max Temp (°F) | 64 | 67 | 71 | 78 | 86 | 90 | 94 | 92 | 90 | 82 | 72 | 65 | 79 |
| Avg Precip (In.) | 1.3 | 1.11 | 1 | .46 | .28 | .51 | 4.19 | 4.08 | 1.69 | 1.73 | .81 | 1.47 | 18.62 |