In October, the weather in Smithers is typically cold. Average daily high temperature in October is about 4 degrees above zero. On average, Smithers has 21 rainy, 5 cloudy, 2 snowy, 2 sunny, and 1 partly cloudy day in October. The rains are usually heavy. October as well as April, May, June, and September is considered the most uncomfortable time to visit Smithers.