August in Fort Nelson is the sunniest month of the year. In August, the weather in Fort Nelson is typically warm. Average daily high temperature in August is about 21 degrees above zero. On average, Fort Nelson has 15 partly cloudy, 9 sunny, 4 cloudy, and 3 rainy days in August. The rains are usually heavy. August as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Fort Nelson.