| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 7b: 5F to 10F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | Jun. 21 - Jun. 30 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 96027 - Etna, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 27 | 29 | 33 | 38 | 44 | 50 | 48 | 42 | 35 | 29 | 25 | 35 |
| Avg Max Temp (°F) | 44 | 50 | 56 | 62 | 72 | 80 | 88 | 88 | 81 | 69 | 52 | 44 | 66 |
| Avg Precip (In.) | 4.18 | 3.59 | 2.52 | 1.31 | 1.04 | .59 | .37 | .39 | .63 | 1.36 | 3.38 | 3.64 | 22.99 |