Goldendale, Washington has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from 37.6 °F (low) to 61.4 °F (high). Annual precipitation averages 15.5 Inches. Goldendale is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.7 °F | 39.3 °F | 2.5 in. |
| February | 28.1 °F | 44.6 °F | 1.78 in. |
| March | 31.2 °F | 52.0 °F | 1.51 in. |
| April | 35.0 °F | 59.3 °F | 1.02 in. |
| May | 41.3 °F | 68.6 °F | 0.98 in. |
| June | 46.4 °F | 75.4 °F | 0.53 in. |
| July | 51.8 °F | 85.6 °F | 0.17 in. |
| August | 51.4 °F | 85.7 °F | 0.23 in. |
| September | 45.0 °F | 77.2 °F | 0.36 in. |
| October | 36.6 °F | 62.5 °F | 1.21 in. |
| November | 30.8 °F | 47.6 °F | 2.18 in. |
| December | 26.4 °F | 38.5 °F | 3.0 in. |
| Annual | 37.6 °F | 61.4 °F | 15.47 in. |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |