| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dsb - Humid Continental Climate - Dry Cool Summer |
| Ecoregion: | 10g - Yakima Folds |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 99322 - Bickleton, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 26 | 30 | 34 | 40 | 46 | 52 | 52 | 46 | 37 | 29 | 23 | 36 |
| Avg Max Temp (°F) | 36 | 40 | 48 | 56 | 65 | 73 | 81 | 82 | 72 | 60 | 43 | 36 | 58 |
| Avg Precip (In.) | 2.29 | 1.76 | 1.35 | .84 | .93 | .71 | .36 | .4 | .58 | .86 | 2.27 | 2.45 | 14.81 |