| 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.11 - Sep. 20 |
| Average Last Frost Date: | Jun. 11 - Jun. 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 15r - Okanogan-Colville Xeric Valleys and Foothills |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 99166 - Republic, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 19 | 25 | 30 | 38 | 43 | 47 | 47 | 39 | 31 | 24 | 16 | 31 |
| Avg Max Temp (°F) | 30 | 37 | 47 | 57 | 65 | 72 | 80 | 80 | 71 | 56 | 38 | 29 | 55 |
| Avg Precip (In.) | 1.39 | 1.3 | 1.31 | 1.29 | 2.05 | 1.75 | 1.27 | 1.07 | .92 | .87 | 1.67 | 1.79 | 16.7 |