Vader, Washington has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 42.3 °F (low) to 62.3 °F (high). Annual precipitation averages 49.9 Inches. Vader is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.0 °F | 46.7 °F | 7.05 in. |
| February | 34.4 °F | 50.3 °F | 5.11 in. |
| March | 36.7 °F | 54.9 °F | 5.32 in. |
| April | 39.6 °F | 60.9 °F | 4.05 in. |
| May | 44.9 °F | 67.9 °F | 2.58 in. |
| June | 49.0 °F | 72.4 °F | 1.92 in. |
| July | 52.5 °F | 79.1 °F | 0.52 in. |
| August | 52.3 °F | 80.4 °F | 0.87 in. |
| September | 48.1 °F | 74.7 °F | 1.85 in. |
| October | 42.6 °F | 62.7 °F | 5.01 in. |
| November | 37.8 °F | 51.8 °F | 7.7 in. |
| December | 34.6 °F | 45.7 °F | 7.88 in. |
| Annual | 42.3 °F | 62.3 °F | 49.86 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |