August in Halls Gap is the rainiest month of the year. In August, the weather in Halls Gap is typically warm. Average daily high temperature in August is about 11 degrees above zero. On average, Halls Gap has 17 rainy, 7 cloudy, 5 sunny, and 2 partly cloudy days in August. The rains are usually moderate. August as well as July is considered the most uncomfortable time to visit Halls Gap.