Canyon City, Oregon has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1.1 °C (low) to 16.9 °C (high). Annual precipitation averages 346 Millimeters. Canyon City is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.2 °C | 5.3 °C | 31.5 mm |
| February | -4.4 °C | 7.8 °C | 21.59 mm |
| March | -2.2 °C | 11.5 °C | 34.04 mm |
| April | -0.1 °C | 14.8 °C | 38.35 mm |
| May | 3.5 °C | 19.8 °C | 49.28 mm |
| June | 6.6 °C | 24.3 °C | 35.31 mm |
| July | 9.4 °C | 31.2 °C | 12.19 mm |
| August | 8.6 °C | 30.9 °C | 12.7 mm |
| September | 4.8 °C | 25.9 °C | 12.7 mm |
| October | 0.5 °C | 17.8 °C | 28.96 mm |
| November | -2.7 °C | 9.4 °C | 33.78 mm |
| December | -5.7 °C | 4.4 °C | 35.56 mm |
| Annual | 1.1 °C | 16.9 °C | 345.96 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |