| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Sep.1 - Sep. 10 |
| Average Last Frost Date: | Jun. 21 - Jun. 30 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 15x - Okanogan Highland Dry Forest |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 98859 - Wauconda, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 18 | 23 | 29 | 37 | 42 | 46 | 46 | 39 | 30 | 22 | 14 | 30 |
| Avg Max Temp (°F) | 29 | 35 | 43 | 53 | 62 | 68 | 76 | 76 | 69 | 53 | 37 | 29 | 53 |
| Avg Precip (In.) | 1.15 | .97 | 1.02 | 1.3 | 2.26 | 2.24 | 1.53 | 1.12 | .91 | 1.03 | 1.45 | 1.36 | 16.35 |