In April, the weather in Flin Flon is typically cold. Average daily high temperature in April is about 3 degrees above zero. On average, Flin Flon has 15 cloudy, 9 rainy, 3 snowy, and 3 sunny days in April. The rains are usually moderate. April as well as January, February, October, and December is considered the most uncomfortable time to visit Flin Flon.