Helix, Oregon has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 39.8 °F (low) to 62.4 °F (high). Annual precipitation averages 19.1 Inches. Helix is located in USDA Plant Hardiness Zone 7a. 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 | 27.8 °F | 40.5 °F | 2.17 in. |
| February | 29.4 °F | 45.1 °F | 1.82 in. |
| March | 33.4 °F | 53.1 °F | 2.25 in. |
| April | 37.4 °F | 60.5 °F | 2.07 in. |
| May | 44.0 °F | 69.3 °F | 1.82 in. |
| June | 49.6 °F | 76.6 °F | 1.32 in. |
| July | 55.3 °F | 87.5 °F | 0.34 in. |
| August | 54.8 °F | 86.7 °F | 0.47 in. |
| September | 48.1 °F | 77.4 °F | 0.64 in. |
| October | 39.0 °F | 63.3 °F | 1.44 in. |
| November | 31.7 °F | 48.6 °F | 2.35 in. |
| December | 27.4 °F | 39.9 °F | 2.42 in. |
| Annual | 39.8 °F | 62.4 °F | 19.11 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |