| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 8a: 10°F to 15°F Zone 9b: 25°F to 30°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 |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Cfb - Oceanic Climate |
| Ecoregion: | 1b - Coastal Uplands |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98331 - Forks, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 35 | 35 | 38 | 43 | 47 | 50 | 50 | 47 | 42 | 37 | 34 | 41 |
| Avg Max Temp (°F) | 45 | 49 | 52 | 58 | 63 | 67 | 71 | 72 | 69 | 60 | 49 | 44 | 58 |
| Avg Precip (In.) | 16.38 | 15.06 | 13.06 | 8.68 | 5.95 | 3.75 | 2.72 | 2.7 | 4.32 | 10.85 | 17.32 | 18.06 | 118.83 |