| 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: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| 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 97325 - Aumsville, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 35 | 38 | 40 | 45 | 49 | 53 | 53 | 49 | 43 | 38 | 34 | 42 |
| Avg Max Temp (°F) | 47 | 51 | 56 | 60 | 67 | 73 | 80 | 81 | 76 | 64 | 52 | 46 | 63 |
| Avg Precip (In.) | 6.71 | 5.93 | 5.23 | 3.81 | 3.13 | 2.24 | .82 | 1.03 | 1.93 | 3.89 | 7.47 | 7.53 | 49.73 |