| 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 | |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F | |
| 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: | 2c - San Juan Islands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98221 - Anacortes, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 35 | 36 | 38 | 42 | 46 | 50 | 52 | 53 | 50 | 44 | 39 | 35 | 43 |
| Avg Max Temp (°F) | 45 | 49 | 52 | 57 | 63 | 68 | 72 | 72 | 68 | 59 | 50 | 45 | 58 |
| Avg Precip (In.) | 3.83 | 2.64 | 2.33 | 1.99 | 1.76 | 1.57 | 1.11 | 1.1 | 1.45 | 2.38 | 4.26 | 3.92 | 28.33 |