Baker City, Oregon has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.1 °C (low) to 15.4 °C (high). Annual precipitation averages 313.2 Millimeters. Baker City is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.3 °C | 1.9 °C | 29.97 mm |
| February | -5.8 °C | 5.3 °C | 22.35 mm |
| March | -3.2 °C | 10.3 °C | 28.96 mm |
| April | -0.9 °C | 14.4 °C | 25.65 mm |
| May | 2.9 °C | 19.3 °C | 45.97 mm |
| June | 6 °C | 23.4 °C | 33.78 mm |
| July | 9 °C | 29.8 °C | 19.05 mm |
| August | 8.3 °C | 29.9 °C | 11.94 mm |
| September | 4.2 °C | 24.8 °C | 11.43 mm |
| October | -0.4 °C | 16.6 °C | 20.32 mm |
| November | -4 °C | 7.6 °C | 27.43 mm |
| December | -7.3 °C | 1.9 °C | 36.32 mm |
| Annual | 0.1 °C | 15.4 °C | 313.17 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |