| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°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: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | 3c - Prairie Terraces |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 97330 - Corvallis, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 35 | 37 | 39 | 43 | 48 | 51 | 51 | 48 | 41 | 37 | 33 | 41 |
| Avg Max Temp (°F) | 47 | 51 | 56 | 61 | 67 | 73 | 81 | 82 | 77 | 65 | 52 | 46 | 63 |
| Avg Precip (In.) | 7.21 | 5.88 | 4.87 | 2.62 | 2.16 | 1.42 | .32 | .62 | 1.41 | 3.39 | 6.31 | 7.29 | 43.51 |