| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Nov. 11 - Nov. 20 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | 4a - Western Cascades Lowlands and Valleys |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 97055 - Sandy, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 36 | 38 | 41 | 45 | 50 | 54 | 54 | 50 | 44 | 39 | 35 | 43 |
| Avg Max Temp (°F) | 46 | 50 | 55 | 60 | 67 | 72 | 79 | 80 | 74 | 63 | 52 | 46 | 62 |
| Avg Precip (In.) | 7.9 | 6.45 | 5.63 | 4.38 | 3.48 | 2.39 | .94 | 1.22 | 2.37 | 4.41 | 8.1 | 8.36 | 55.63 |