Juntura, Oregon has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 2.3 °C (low) to 18.3 °C (high). Annual precipitation averages 245.6 Millimeters. Juntura is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.3 °C | 3.4 °C | 28.96 mm |
| February | -4.5 °C | 7.3 °C | 19.3 mm |
| March | -1.4 °C | 13 °C | 24.13 mm |
| April | 0.9 °C | 17.4 °C | 20.57 mm |
| May | 5.6 °C | 22.7 °C | 31.5 mm |
| June | 9.3 °C | 27.6 °C | 21.34 mm |
| July | 13.2 °C | 33.8 °C | 9.14 mm |
| August | 11.8 °C | 33.3 °C | 5.84 mm |
| September | 7.2 °C | 27.8 °C | 7.87 mm |
| October | 1.4 °C | 19.6 °C | 18.03 mm |
| November | -3.3 °C | 9.9 °C | 24.13 mm |
| December | -6.2 °C | 3.6 °C | 34.8 mm |
| Annual | 2.3 °C | 18.3 °C | 245.61 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |