| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate |
| Ecoregion: | 10a - Channeled Scablands |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 98802 - East Wenatchee, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 26 | 32 | 39 | 47 | 53 | 59 | 58 | 49 | 39 | 30 | 23 | 40 |
| Avg Max Temp (°F) | 35 | 42 | 54 | 64 | 72 | 79 | 87 | 87 | 77 | 63 | 45 | 35 | 62 |
| Avg Precip (In.) | 1.25 | .86 | .58 | .48 | .48 | .68 | .3 | .42 | .38 | .5 | 1.25 | 1.38 | 8.57 |