| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F Zone 8a: 10°F to 15°F | |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F | |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate | |
| Ecoregion: | 1b - Coastal Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98612 - Cathlamet, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 34 | 35 | 38 | 42 | 46 | 49 | 49 | 46 | 40 | 36 | 33 | 40 |
| Avg Max Temp (°F) | 47 | 51 | 54 | 58 | 64 | 67 | 72 | 73 | 71 | 62 | 52 | 47 | 60 |
| Avg Precip (In.) | 10.21 | 8.44 | 7.22 | 5.29 | 3.43 | 2.69 | 1.29 | 1.5 | 3.17 | 5.59 | 10.85 | 11.46 | 71.15 |