| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 6b: -5°F to 0°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 8a: 10F to 15F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | 1f - Willapa Hills |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98563 - Montesano, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 34 | 36 | 38 | 43 | 47 | 50 | 51 | 47 | 41 | 36 | 34 | 41 |
| Avg Max Temp (°F) | 46 | 50 | 54 | 59 | 65 | 69 | 74 | 75 | 72 | 62 | 51 | 46 | 60 |
| Avg Precip (In.) | 11.73 | 9.92 | 8.64 | 5.89 | 3.35 | 2.49 | 1.29 | 1.63 | 3.23 | 6.69 | 11.69 | 12.8 | 79.36 |