August in King Salmon is the rainiest and the cloudiest month of the year. In August, the weather in King Salmon is typically warm. Average daily high temperature in August is about 15 degrees above zero. On average, King Salmon has 25 rainy, 4 cloudy, and 2 sunny days in August. The rains are usually heavy. August as well as April, May, June, and July is considered the most uncomfortable time to visit King Salmon.