The highest day temperature in October 2026 was 67°F. The lowest night temperature was 39°F. The average values for day and night temperatures during October were 57.5°F и 48.3°F respectivly.

The average sea surface temperature in October 2026 for Bellingham was 54.1°F. The maximum and minimum values were 52.2°F and 56.4°F respectively.

Most of the days in October are gloomy but you can also expect sunny days.

Precipitation total in October for Bellingham is 1.7 in. It makes october one of the most rainy months of the year.

The average wind speed in October is 3.9 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Bellingham in October is 5.3 hours.