| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5a: -20°F to -15°F Zone 7a: 0°F to 5°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. 11 - Jun. 20 |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate |
| Ecoregion: | 11k - Blue Mountain Basins |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 97814 - Baker City, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 23 | 27 | 31 | 38 | 44 | 49 | 49 | 40 | 32 | 26 | 19 | 33 |
| Avg Max Temp (°F) | 35 | 42 | 51 | 59 | 68 | 76 | 85 | 85 | 76 | 63 | 45 | 36 | 60 |
| Avg Precip (In.) | .91 | .75 | .9 | .93 | 1.43 | 1.23 | .63 | .52 | .62 | .62 | .97 | .95 | 10.45 |