| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°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 8a: 10F to 15F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 21 - May 31 | |
| 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 98355 - Mineral, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 29 | 31 | 32 | 35 | 40 | 45 | 49 | 49 | 45 | 39 | 33 | 30 | 38 |
| Avg Max Temp (°F) | 41 | 45 | 49 | 54 | 62 | 67 | 74 | 74 | 69 | 58 | 46 | 41 | 57 |
| Avg Precip (In.) | 13.9 | 11.33 | 9.25 | 5.76 | 3.8 | 3.02 | 1.48 | 1.69 | 3.15 | 7.11 | 12.68 | 14.82 | 88 |