Lyons, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 5.8 °C (low) to 16.8 °C (high). Annual precipitation averages 1680.2 Millimeters. Lyons 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 Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.3 °C | 8.2 °C | 219.2 mm |
| February | 1.6 °C | 10.1 °C | 166.88 mm |
| March | 2.8 °C | 12.4 °C | 193.29 mm |
| April | 4.6 °C | 15.3 °C | 167.89 mm |
| May | 7.1 °C | 19.2 °C | 117.6 mm |
| June | 9.6 °C | 22.2 °C | 76.2 mm |
| July | 11.6 °C | 27.1 °C | 16.26 mm |
| August | 11.4 °C | 27.7 °C | 17.27 mm |
| September | 9.1 °C | 24.2 °C | 69.34 mm |
| October | 6.2 °C | 17.2 °C | 144.53 mm |
| November | 3.3 °C | 10.8 °C | 227.33 mm |
| December | 1.2 °C | 7.5 °C | 264.41 mm |
| Annual | 5.8 °C | 16.8 °C | 1680.2 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 |