Wilson Creek, Washington has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 37.9 °F (low) to 62.3 °F (high). Annual precipitation averages 9.4 Inches. Wilson Creek is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.6 °F | 36.3 °F | 1.28 in. |
| February | 26.3 °F | 43.2 °F | 0.84 in. |
| March | 30.9 °F | 53.5 °F | 0.93 in. |
| April | 35.9 °F | 62.7 °F | 0.72 in. |
| May | 43.5 °F | 72.4 °F | 0.79 in. |
| June | 49.5 °F | 79.3 °F | 0.65 in. |
| July | 55.1 °F | 88.7 °F | 0.32 in. |
| August | 54.2 °F | 88.0 °F | 0.22 in. |
| September | 46.3 °F | 78.4 °F | 0.26 in. |
| October | 36.8 °F | 63.1 °F | 0.77 in. |
| November | 29.0 °F | 46.4 °F | 1.22 in. |
| December | 23.3 °F | 35.8 °F | 1.44 in. |
| Annual | 37.9 °F | 62.3 °F | 9.44 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |