Redmond, Oregon has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 0.9 °C (low) to 16.8 °C (high). Annual precipitation averages 221.2 Millimeters. Redmond is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Aug. 21 - Aug. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4 °C | 6.3 °C | 24.64 mm |
| February | -3.9 °C | 8.2 °C | 20.07 mm |
| March | -2.6 °C | 11.9 °C | 18.54 mm |
| April | -0.9 °C | 14.8 °C | 18.54 mm |
| May | 2.7 °C | 19.7 °C | 24.64 mm |
| June | 5.4 °C | 23.8 °C | 16.76 mm |
| July | 8.5 °C | 29.6 °C | 9.65 mm |
| August | 8.1 °C | 29.4 °C | 9.4 mm |
| September | 4.5 °C | 24.8 °C | 7.62 mm |
| October | 0.4 °C | 17.6 °C | 15.75 mm |
| November | -2.4 °C | 10.1 °C | 22.1 mm |
| December | -4.8 °C | 5.5 °C | 33.53 mm |
| Annual | 0.9 °C | 16.8 °C | 221.24 mm |
| Average First Frost Date | Aug. 21 - Aug. 31 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |