August in Homer is the warmest month of the year. In August, the weather in Homer is typically warm. Average daily high temperature in August is about 14 degrees above zero. On average, Homer has 15 rainy, 6 partly cloudy, 5 sunny, and 5 cloudy 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 Homer.