| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 15r - Okanogan-Colville Xeric Valleys and Foothills |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 99160 - Orient, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 22 | 26 | 33 | 40 | 47 | 51 | 50 | 42 | 34 | 26 | 19 | 34 |
| Avg Max Temp (°F) | 30 | 37 | 48 | 59 | 68 | 74 | 82 | 82 | 72 | 56 | 39 | 30 | 56 |
| Avg Precip (In.) | 1.84 | 1.3 | 1.29 | 1.17 | 1.94 | 1.85 | 1.67 | 1.18 | .75 | 1.14 | 1.95 | 2.08 | 18.14 |