| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 8a: 10°F to 15°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 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: | Sep.11 - Sep. 20 |
| Average Last Frost Date: | Jun. 1 - Jun. 10 |
| Koppen-Geiger Climate Zone: | Dsb - Humid Continental Climate - Dry Cool Summer |
| Ecoregion: | 9i - Southern Cascade Slope |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 97627 - Keno, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 23 | 24 | 25 | 28 | 34 | 40 | 47 | 47 | 42 | 34 | 26 | 21 | 33 |
| Avg Max Temp (°F) | 38 | 43 | 46 | 52 | 60 | 69 | 80 | 79 | 73 | 60 | 44 | 37 | 57 |
| Avg Precip (In.) | 3.06 | 2.18 | 2.3 | 1.36 | 1.34 | .93 | .39 | .6 | .77 | 1.19 | 2.93 | 2.95 | 19.99 |