| 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: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | 3d - Valley Foothills |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 97306 - Salem, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 35 | 36 | 39 | 43 | 48 | 51 | 51 | 47 | 41 | 38 | 34 | 41 |
| Avg Max Temp (°F) | 47 | 51 | 56 | 61 | 67 | 73 | 80 | 81 | 76 | 64 | 52 | 46 | 63 |
| Avg Precip (In.) | 6.7 | 6.05 | 5.08 | 3.36 | 2.77 | 1.93 | .63 | .91 | 1.64 | 3.67 | 7.6 | 7.28 | 47.61 |