October in Bolton is the cloudiest month of the year. In October, the weather in Bolton is typically warm. Average daily high temperature in October is about 12 degrees above zero. On average, Bolton has 18 rainy, 9 cloudy, 3 sunny, and 1 partly cloudy day in October. The rains are usually heavy. October as well as January, February, March, and April is considered the most uncomfortable time to visit Bolton.