Bellingham Climate by Month
Bellingham, Washington, United States
Warm summers and cool winters, with rain spread through the year.
Warm summers and cool winters, with rain spread through the year: that's Bellingham's climate in short. Afternoon highs range from 45°F (7°C) in December to 75°F (24°C) in August, and January nights average 34°F (1°C). It gets 41 in (1033 mm) of rain a year, spread across the months.
- Warmest month
- 75°F(24°C)
- Average high, August
- Coldest nights
- 34°F(1°C)
- Average low, January
- Rain per year
- 41 in(1033 mm)
- No clear rainy season
- Humidity
- 75%
- Sunniest: July
Best and worst months in Bellingham
Best for weatherJuly and August are the best time for weather in Bellingham: highs near 75°F (24°C) and about 1.3 in (34 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 45°F (7°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Bellingham weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 45°F(7°C) | 34°F(1°C) | 5.4 in(138 mm) | 85% | 0.9 |
| FebFebruary | 49°F(9°C) | 35°F(2°C) | 3.2 in(82 mm) | 78% | 1.9 |
| MarMarch | 53°F(12°C) | 37°F(3°C) | 3.8 in(96 mm) | 68% | 2.7 |
| AprApril | 58°F(15°C) | 41°F(5°C) | 3.0 in(77 mm) | 74% | 4.2 |
| MayMay | 65°F(18°C) | 47°F(8°C) | 2.4 in(62 mm) | 73% | 5.1 |
| JunJune | 69°F(21°C) | 51°F(11°C) | 2.0 in(52 mm) | 67% | 5.5 |
| JulJulyBest | 74°F(24°C) | 55°F(13°C) | 1.1 in(29 mm) | 68% | 6.0 |
| AugAugustBest | 75°F(24°C) | 54°F(12°C) | 1.5 in(38 mm) | 67% | 5.1 |
| SepSeptember | 70°F(21°C) | 50°F(10°C) | 2.0 in(50 mm) | 74% | 3.6 |
| OctOctober | 59°F(15°C) | 43°F(6°C) | 4.2 in(106 mm) | 78% | 1.9 |
| NovNovember | 51°F(10°C) | 38°F(3°C) | 6.5 in(165 mm) | 81% | 1.0 |
| DecDecember | 45°F(7°C) | 34°F(1°C) | 5.4 in(138 mm) | 86% | 0.7 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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