October in Dutch Harbor is the rainiest month of the year. In October, the weather in Dutch Harbor is typically cold. Average daily high temperature in October is about 6 degrees above zero. On average, Dutch Harbor has 23 rainy, 5 cloudy, and 3 partly cloudy days in October. The rains are usually heavy. October as well as April, May, June, and July is considered the most uncomfortable time to visit Dutch Harbor.