Jordan Valley, Oregon has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 1 °C (low) to 16.2 °C (high). Annual precipitation averages 344.7 Millimeters. Jordan Valley 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 | -6.8 °C | 3.7 °C | 39.12 mm |
| February | -5.3 °C | 6.2 °C | 30.73 mm |
| March | -2.7 °C | 10.6 °C | 36.32 mm |
| April | -0.7 °C | 13.8 °C | 34.04 mm |
| May | 3.4 °C | 18.9 °C | 44.2 mm |
| June | 7.3 °C | 24.3 °C | 27.94 mm |
| July | 11.4 °C | 31 °C | 9.91 mm |
| August | 10.4 °C | 30.5 °C | 9.4 mm |
| September | 5.7 °C | 24.9 °C | 12.19 mm |
| October | 0.3 °C | 17.1 °C | 26.42 mm |
| November | -3.9 °C | 9.2 °C | 30.48 mm |
| December | -7.1 °C | 3.6 °C | 43.94 mm |
| Annual | 1 °C | 16.2 °C | 344.69 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 | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |