| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F Zone 9b: 25°F to 30°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 10a: 30°F to 35°F Zone 9b: 25°F to 30°F |
| 1990 Hardiness Zone: | Zone 10a: 30F to 35F |
| Average First Frost Date: | Dec. 1 - Dec. 10 |
| Average Last Frost Date: | Mar. 11 - Mar. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 95519 - McKinleyville, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 41 | 41 | 43 | 46 | 50 | 52 | 52 | 50 | 46 | 43 | 40 | 45 |
| Avg Max Temp (°F) | 54 | 56 | 57 | 59 | 61 | 64 | 66 | 67 | 67 | 63 | 58 | 54 | 61 |
| Avg Precip (In.) | 8.84 | 6.85 | 7.16 | 3.98 | 2.11 | .86 | .17 | .46 | 1.05 | 2.97 | 7.72 | 8.72 | 50.88 |