In October, the weather in Sault Ste. Marie is typically cold. Average daily high temperature in October is about 10 degrees above zero. On average, Sault Ste. Marie has 13 rainy, 7 partly cloudy, 6 sunny, and 5 cloudy days in October. The rains are usually heavy. October as well as April and November is considered the most uncomfortable time to visit Sault Ste. Marie.