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Bellingham Weather by Month
Average temperatures, rainfall and humidity for Bellingham, United States, month by month, built from OpenWeather's historical records. Use it to see what a typical Bellingham month looks like before you travel — then check the live Bellingham forecast for the days ahead.
Warmest month
August
25°C average high
Coolest month
December
1°C average low
Wettest month
November
206 mm of rain
Driest month
July
27 mm of rain
Average temperature and rainfall in Bellingham by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 7°C | 2°C | -16°C / 16°C | 162 mm | 85% | 9 km/h |
| February | 7°C | 2°C | -10°C / 16°C | 131 mm | 81% | 10 km/h |
| March | 11°C | 4°C | -5°C / 21°C | 171 mm | 79% | 9 km/h |
| April | 15°C | 6°C | -1°C / 26°C | 96 mm | 74% | 9 km/h |
| May | 19°C | 9°C | 2°C / 31°C | 66 mm | 74% | 8 km/h |
| June | 22°C | 11°C | 5°C / 42°C | 63 mm | 73% | 7 km/h |
| July | 25°C | 13°C | 8°C / 35°C | 27 mm | 71% | 7 km/h |
| August | 25°C | 14°C | 7°C / 36°C | 31 mm | 74% | 7 km/h |
| September | 21°C | 12°C | 4°C / 32°C | 106 mm | 80% | 7 km/h |
| October | 14°C | 7°C | -2°C / 26°C | 181 mm | 84% | 7 km/h |
| November | 9°C | 4°C | -11°C / 19°C | 206 mm | 84% | 9 km/h |
| December | 6°C | 1°C | -15°C / 14°C | 187 mm | 86% | 9 km/h |
Best time to visit Bellingham
The most comfortable time to visit Bellingham is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around November, totalling about 1428 mm a year.
Travellers who prefer heat should aim for August, when highs average 25°C. November is the month to avoid if rain would spoil your plans — it averages 206 mm, roughly 8× the rainfall of July.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Bellingham forecast for what is happening now.