Wilson Creek, Washington has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 3.3 °C (low) to 16.8 °C (high). Annual precipitation averages 239.8 Millimeters. 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 | -4.7 °C | 2.4 °C | 32.51 mm |
| February | -3.2 °C | 6.2 °C | 21.34 mm |
| March | -0.6 °C | 11.9 °C | 23.62 mm |
| April | 2.2 °C | 17.1 °C | 18.29 mm |
| May | 6.4 °C | 22.4 °C | 20.07 mm |
| June | 9.7 °C | 26.3 °C | 16.51 mm |
| July | 12.8 °C | 31.5 °C | 8.13 mm |
| August | 12.3 °C | 31.1 °C | 5.59 mm |
| September | 7.9 °C | 25.8 °C | 6.6 mm |
| October | 2.7 °C | 17.3 °C | 19.56 mm |
| November | -1.7 °C | 8 °C | 30.99 mm |
| December | -4.8 °C | 2.1 °C | 36.58 mm |
| Annual | 3.3 °C | 16.8 °C | 239.79 mm |
| 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 : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |