| 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: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate | |
| Ecoregion: | 2e - Eastern Puget Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98229 - Bellingham, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 30 | 33 | 35 | 38 | 43 | 48 | 51 | 51 | 46 | 40 | 35 | 32 | 40 |
| Avg Max Temp (°F) | 42 | 47 | 52 | 58 | 63 | 68 | 73 | 74 | 68 | 60 | 48 | 43 | 58 |
| Avg Precip (In.) | 6.51 | 4.44 | 4.68 | 3.73 | 2.91 | 2.64 | 1.77 | 1.7 | 2.66 | 4.16 | 7.46 | 7.46 | 50.1 |