September in Esso is the windiest month of the year. In September, the weather in Esso is typically cold. Average daily high temperature in September is about 7 degrees above zero. On average, Esso has 12 rainy, 9 cloudy, 5 partly cloudy, 3 sunny, and 1 snowy day in September. The rains are usually heavy. September as well as January, February, March, and June is considered the most uncomfortable time to visit Esso.