The highest day temperature in January 2026 was 56°F. The lowest night temperature was 25°F. The average values for day and night temperatures during January were 44.4°F и 37.5°F respectivly.

The average sea surface temperature in January 2026 for Whidbey Island was 46.0°F. The maximum and minimum values were 44.0°F and 47.6°F respectively.

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

Precipitation total in January for Whidbey Island is 1.9 in. It makes january the most rainy month of the year.

The average wind speed in January is 7.5 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 Whidbey Island in January is 3.1 hours.