The highest day temperature in January 2026 was 46°F. The lowest night temperature was 23°F. The average values for day and night temperatures during January were 35.3°F и 33.1°F respectivly.

The average sea surface temperature in January 2026 for Ketchikan was 41.9°F. The maximum and minimum values were 40.8°F and 43.0°F respectively.

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

Precipitation total in January for Ketchikan is 4.4 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 11.4 mph. It makes January one of the most windy months of the year for Ketchikan.

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 January is 1.8 hours.