West Scio, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 6 °C (low) to 17.5 °C (high). Annual precipitation averages 1156.7 Millimeters. West Scio is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.7 °C | 8.6 °C | 157.73 mm |
| February | 1.8 °C | 10.7 °C | 118.87 mm |
| March | 3.1 °C | 13.3 °C | 134.62 mm |
| April | 4.7 °C | 16.1 °C | 101.35 mm |
| May | 7.5 °C | 19.9 °C | 75.44 mm |
| June | 9.8 °C | 23 °C | 46.74 mm |
| July | 11.7 °C | 27.8 °C | 10.41 mm |
| August | 11.5 °C | 28.1 °C | 11.94 mm |
| September | 9.4 °C | 24.8 °C | 44.7 mm |
| October | 6.2 °C | 18 °C | 103.38 mm |
| November | 3.6 °C | 11.6 °C | 169.16 mm |
| December | 1.5 °C | 8 °C | 182.37 mm |
| Annual | 6 °C | 17.5 °C | 1156.71 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |