The highest day temperature in October 2025 was 54°F. The lowest night temperature was 37°F. The average values for day and night temperatures during October were 47.6°F и 45.4°F respectivly.

The average sea surface temperature in October 2025 for Ketchikan was 52.5°F. The maximum and minimum values were 51.4°F and 53.2°F respectively.

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

Precipitation total in October for Ketchikan is 4.3 in. It makes october one of the most rainy months of the year.

The average wind speed in October is 10.2 mph.

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 Ketchikan in October is 3.0 hours.