October in Thompson is the rainiest month of the year. In October, the weather in Thompson is typically cold. Average daily high temperature in October is about 2 degrees above zero. On average, Thompson has 15 cloudy, 13 rainy, 2 snowy, and 1 sunny day in October. The rains are usually moderate. October as well as January, February, March, and December is considered the most uncomfortable time to visit Thompson.