Eugene, Oregon has a Warm-Summer Mediterranean Climate climate (Köppen classification: Csb). Average annual temperatures range from 42.1 °F (low) to 63.7 °F (high). Annual precipitation averages 39.9 Inches. Eugene is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 34.8 °F | 47.8 °F | 5.19 in. |
| February | 35.0 °F | 51.5 °F | 4.51 in. |
| March | 36.9 °F | 56.1 °F | 4.65 in. |
| April | 39.7 °F | 60.5 °F | 3.6 in. |
| May | 44.1 °F | 67.3 °F | 2.78 in. |
| June | 48.1 °F | 73.3 °F | 1.42 in. |
| July | 51.8 °F | 82.8 °F | 0.33 in. |
| August | 51.6 °F | 83.4 °F | 0.38 in. |
| September | 47.9 °F | 77.5 °F | 1.45 in. |
| October | 42.3 °F | 64.6 °F | 3.34 in. |
| November | 38.0 °F | 53.1 °F | 5.75 in. |
| December | 34.6 °F | 46.7 °F | 6.54 in. |
| Annual | 42.1 °F | 63.7 °F | 39.94 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°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 |