| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°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 Zone 7b: 5°F to 10°F | |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | May 1 - May 10 | |
| 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 98616 - Cougar, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 32 | 34 | 36 | 38 | 43 | 48 | 52 | 52 | 49 | 43 | 37 | 33 | 41 |
| Avg Max Temp (°F) | 43 | 47 | 53 | 58 | 65 | 71 | 78 | 79 | 73 | 62 | 49 | 43 | 60 |
| Avg Precip (In.) | 10.83 | 9.15 | 7.8 | 5.71 | 4.03 | 3.02 | 1.16 | 1.72 | 3.36 | 6.15 | 11.08 | 13.52 | 77.51 |