| 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 Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 6b: -5°F to 0°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: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 11 - May 20 |
| 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 97014 - Cascade Locks, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 31 | 33 | 36 | 39 | 45 | 49 | 54 | 54 | 50 | 43 | 37 | 32 | 42 |
| Avg Max Temp (°F) | 42 | 46 | 52 | 58 | 64 | 70 | 78 | 79 | 73 | 62 | 49 | 42 | 60 |
| Avg Precip (In.) | 17.08 | 12.27 | 9 | 5.21 | 4.44 | 2.54 | 1.01 | 1.19 | 3.39 | 8.69 | 13.54 | 20.69 | 99.05 |