| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°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 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: | 4a - Western Cascades Lowlands and Valleys | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 97329 - Cascadia, OR | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 34 | 35 | 38 | 42 | 46 | 50 | 49 | 45 | 40 | 36 | 33 | 40 |
| Avg Max Temp (°F) | 46 | 50 | 55 | 59 | 65 | 71 | 78 | 80 | 75 | 64 | 51 | 45 | 62 |
| Avg Precip (In.) | 8.99 | 7.04 | 6.92 | 5.69 | 4.53 | 3.01 | .95 | 1.35 | 2.42 | 4.98 | 10.09 | 9.6 | 65.58 |