Wenatchee, Washington has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 5.2 °C (low) to 17.4 °C (high). Annual precipitation averages 229.9 Millimeters. Wenatchee is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.6 °C | 2.4 °C | 34.04 mm |
| February | -2.4 °C | 6.7 °C | 23.62 mm |
| March | 0.6 °C | 12.6 °C | 19.81 mm |
| April | 4.3 °C | 18 °C | 14.99 mm |
| May | 8.7 °C | 23.1 °C | 19.56 mm |
| June | 12.3 °C | 26.8 °C | 13.97 mm |
| July | 15.7 °C | 32 °C | 6.86 mm |
| August | 15.2 °C | 31.7 °C | 4.06 mm |
| September | 10.4 °C | 26.4 °C | 6.6 mm |
| October | 4.6 °C | 17.8 °C | 18.29 mm |
| November | -0.3 °C | 8.4 °C | 27.94 mm |
| December | -3.4 °C | 2.3 °C | 40.13 mm |
| Annual | 5.2 °C | 17.4 °C | 229.87 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |