Keno, Oregon has a Humid Continental Climate - Dry Cool Summer climate (Köppen classification: Dsb). Average annual temperatures range from -0.2 °C (low) to 16.2 °C (high). Annual precipitation averages 457.2 Millimeters. Keno 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 Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.4 °C | 4.9 °C | 66.8 mm |
| February | -5.2 °C | 7.3 °C | 50.04 mm |
| March | -3.2 °C | 10.3 °C | 45.97 mm |
| April | -1.8 °C | 13.8 °C | 38.1 mm |
| May | 2 °C | 19.1 °C | 31.75 mm |
| June | 4.9 °C | 23.7 °C | 17.78 mm |
| July | 8.2 °C | 29.5 °C | 7.37 mm |
| August | 7.2 °C | 29.1 °C | 10.67 mm |
| September | 3.4 °C | 25.2 °C | 12.19 mm |
| October | -1.1 °C | 17.9 °C | 33.78 mm |
| November | -4.2 °C | 9.3 °C | 58.67 mm |
| December | -6.7 °C | 4.4 °C | 84.07 mm |
| Annual | -0.2 °C | 16.2 °C | 457.19 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Dsb - Humid Continental Climate - Dry Cool Summer |