April in North Bay is the rainiest month of the year. In April, the weather in North Bay is typically cold. Average daily high temperature in April is about 6 degrees above zero. On average, North Bay has 14 rainy, 7 cloudy, 5 sunny, and 4 partly cloudy days in April. The rains are usually heavy. April as well as January, October, and November is considered the most uncomfortable time to visit North Bay.