| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 96097 - Yreka, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 26 | 29 | 32 | 39 | 45 | 51 | 50 | 43 | 35 | 28 | 24 | 35 |
| Avg Max Temp (°F) | 44 | 49 | 54 | 60 | 70 | 79 | 88 | 88 | 81 | 67 | 51 | 44 | 65 |
| Avg Precip (In.) | 3.09 | 2.32 | 2.04 | 1.13 | 1.11 | .78 | .45 | .44 | .73 | 1.08 | 2.71 | 3.11 | 18.99 |