| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | 3a - Portland/Vancouver Basin |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98660 - Vancouver, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 36 | 38 | 41 | 47 | 51 | 55 | 55 | 50 | 44 | 39 | 35 | 44 |
| Avg Max Temp (°F) | 46 | 51 | 56 | 60 | 67 | 72 | 79 | 79 | 74 | 64 | 52 | 46 | 62 |
| Avg Precip (In.) | 5.57 | 4.66 | 4.17 | 2.92 | 2.43 | 1.68 | .71 | .98 | 1.74 | 3.16 | 6.12 | 6.09 | 40.23 |