| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | 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: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate | |
| Ecoregion: | 4a - Western Cascades Lowlands and Valleys | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98564 - Mossyrock, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 33 | 35 | 37 | 42 | 47 | 50 | 50 | 46 | 40 | 36 | 33 | 40 |
| Avg Max Temp (°F) | 44 | 49 | 53 | 59 | 66 | 71 | 77 | 77 | 72 | 61 | 50 | 45 | 60 |
| Avg Precip (In.) | 7.06 | 5.88 | 5.72 | 4.51 | 3.29 | 2.71 | 1.12 | 1.61 | 2.55 | 4.95 | 7.29 | 8.82 | 55.52 |