Temperature
Cool by day, cold at night.
Bellingham is usually most comfortable from July to September. Typical daytime highs range from 45–70°F across the year. Rain varies by season.

Cool by day, cold at night.
It rains on most days. About 19 wet days, the highest monthly average.
Sunshine is limited, with cloud often dominating.
Humidity is rarely noticeable in the cool air.
In November, afternoons feel about 43° and nights feel near 39°.
Mostly cloudy skies this month.
Calm winds are typical in November.
November late afternoons are around 49°F, easing to about 47°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 46 | 39 | 8.4 | 18 | 4.4 | 86 |
| Feb | 48 | 40 | 5.5 | 15 | 6.3 | 81 |
| Mar | 51 | 42 | 6.8 | 19 | 7.7 | 80 |
| Apr | 55 | 45 | 4.8 | 15 | 9.9 | 77 |
| May | 60 | 50 | 3.4 | 11 | 11.6 | 80 |
| Jun | 64 | 55 | 2.5 | 9 | 12.7 | 81 |
| Jul | 69 | 59 | 1.3 | 5 | 13.7 | 81 |
| Aug | 70 | 60 | 1.8 | 6 | 12.5 | 81 |
| Sep | 66 | 56 | 3.2 | 9 | 10.5 | 83 |
| Oct | 58 | 49 | 6.3 | 15 | 7.2 | 84 |
| Nov | 50 | 43 | 9.4 | 19 | 4.8 | 85 |
| Dec | 45 | 39 | 8.1 | 19 | 4.1 | 86 |
Similar climates
Want a side-by-side climate view? Compare Bellingham with New York City.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 27, 2026
Data & methodology