| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | 3b - Willamette River and Tributaries Gallery Forest |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 97404 - Eugene, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 35 | 37 | 40 | 44 | 48 | 52 | 52 | 48 | 42 | 38 | 34 | 42 |
| Avg Max Temp (°F) | 47 | 51 | 56 | 61 | 67 | 74 | 82 | 82 | 77 | 65 | 52 | 46 | 63 |
| Avg Precip (In.) | 5.55 | 4.72 | 4.24 | 3.32 | 2.55 | 1.62 | .4 | .53 | 1.25 | 3.02 | 4.97 | 6.62 | 38.8 |