Jordan Valley, Oregon has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 33.8 °F (low) to 61.1 °F (high). Annual precipitation averages 13.6 Inches. 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 | 19.8 °F | 38.7 °F | 1.54 in. |
| February | 22.5 °F | 43.2 °F | 1.21 in. |
| March | 27.1 °F | 51.1 °F | 1.43 in. |
| April | 30.7 °F | 56.8 °F | 1.34 in. |
| May | 38.1 °F | 66.0 °F | 1.74 in. |
| June | 45.1 °F | 75.7 °F | 1.1 in. |
| July | 52.6 °F | 87.8 °F | 0.39 in. |
| August | 50.8 °F | 86.9 °F | 0.37 in. |
| September | 42.2 °F | 76.9 °F | 0.48 in. |
| October | 32.6 °F | 62.7 °F | 1.04 in. |
| November | 25.0 °F | 48.6 °F | 1.2 in. |
| December | 19.3 °F | 38.4 °F | 1.73 in. |
| Annual | 33.8 °F | 61.1 °F | 13.57 in. |
| 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 : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |