In October, the weather in Chignik Lagoon is typically cold. Average daily high temperature in October is about 5 degrees above zero. On average, Chignik Lagoon has 23 rainy, 3 sunny, 3 cloudy, and 2 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 Chignik Lagoon.