| 2023 Hardiness Zone: | 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 |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°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 6b: -5F to 0F |
| Average First Frost Date: | Sep.1 - Sep. 10 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dsb - Humid Continental Climate - Dry Cool Summer |
| Ecoregion: | 10g - Yakima Folds |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 98620 - Goldendale, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 26 | 31 | 33 | 38 | 44 | 49 | 49 | 42 | 33 | 30 | 24 | 35 |
| Avg Max Temp (°F) | 37 | 42 | 52 | 60 | 68 | 76 | 84 | 85 | 76 | 64 | 46 | 38 | 61 |
| Avg Precip (In.) | 3.03 | 2.23 | 1.76 | .96 | .84 | .75 | .24 | .31 | .56 | 1.52 | 2.68 | 3.08 | 17.97 |