| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate | |
| Ecoregion: | 78d - Serpentine Siskiyous | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 97531 - Kerby, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 31 | 33 | 33 | 35 | 40 | 44 | 50 | 50 | 45 | 40 | 35 | 32 | 39 |
| Avg Max Temp (°F) | 47 | 51 | 55 | 61 | 68 | 76 | 84 | 84 | 79 | 67 | 52 | 46 | 64 |
| Avg Precip (In.) | 11.09 | 10.16 | 8.97 | 4.98 | 2.44 | .81 | .31 | .57 | 1.72 | 4.49 | 10.79 | 11.8 | 68.11 |