October in Peterborough is the rainiest month of the year. In October, the weather in Peterborough is typically warm. Average daily high temperature in October is about 12 degrees above zero. On average, Peterborough has 16 rainy, 6 sunny, 5 partly cloudy, and 4 cloudy days in October. The rains are usually heavy. October as well as March, April, and November is considered the most uncomfortable time to visit Peterborough.