Owyhee, Nevada has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from -0.6 °C (low) to 15.5 °C (high). Annual precipitation averages 387.8 Millimeters. Owyhee is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep.11 - Sep. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.7 °C | 3.6 °C | 36.83 mm |
| February | -7.3 °C | 5.3 °C | 27.18 mm |
| March | -4.2 °C | 9.2 °C | 42.16 mm |
| April | -1.8 °C | 12.9 °C | 54.86 mm |
| May | 2.3 °C | 18 °C | 52.32 mm |
| June | 5.8 °C | 23.7 °C | 30.73 mm |
| July | 9.5 °C | 30.2 °C | 12.19 mm |
| August | 8.4 °C | 29.7 °C | 11.68 mm |
| September | 4.4 °C | 24.3 °C | 18.8 mm |
| October | -1.5 °C | 16.7 °C | 30.99 mm |
| November | -5.3 °C | 8.9 °C | 31.24 mm |
| December | -8.6 °C | 3.7 °C | 38.86 mm |
| Annual | -0.6 °C | 15.5 °C | 387.84 mm |
| Average First Frost Date | Sep.11 - Sep. 20 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Exceptional Drought |
| Köppen Climate Classification | BWk - Cold Desert Climate |