| 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 8a: 10F to 15F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 1 - Apr. 10 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate | |
| Ecoregion: | 2f - Central Puget Lowland | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98275 - Mukilteo, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 34 | 35 | 37 | 41 | 46 | 51 | 54 | 54 | 49 | 43 | 38 | 34 | 43 |
| Avg Max Temp (°F) | 46 | 50 | 54 | 59 | 64 | 68 | 73 | 74 | 69 | 60 | 51 | 46 | 59 |
| Avg Precip (In.) | 4.42 | 3.33 | 3.77 | 2.87 | 2.44 | 2.09 | 1.23 | 1.29 | 1.98 | 3.16 | 5.18 | 5.01 | 36.77 |