Sutherlin, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 43.2 °F (low) to 65.6 °F (high). Annual precipitation averages 38.8 Inches. Sutherlin is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 35.3 °F | 49.0 °F | 6.06 in. |
| February | 35.8 °F | 53.0 °F | 4.17 in. |
| March | 37.5 °F | 57.7 °F | 4.12 in. |
| April | 40.4 °F | 62.5 °F | 3.35 in. |
| May | 45.2 °F | 69.5 °F | 2.45 in. |
| June | 49.7 °F | 76.0 °F | 1.14 in. |
| July | 53.8 °F | 84.8 °F | 0.33 in. |
| August | 53.2 °F | 85.9 °F | 0.49 in. |
| September | 48.9 °F | 79.9 °F | 1.04 in. |
| October | 43.3 °F | 66.7 °F | 3.15 in. |
| November | 39.4 °F | 54.3 °F | 5.83 in. |
| December | 35.4 °F | 47.5 °F | 6.63 in. |
| Annual | 43.2 °F | 65.6 °F | 38.76 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Csb - Warm-Summer Mediterranean Climate |