In April, the weather in Ft McMurray is typically cold. Average daily high temperature in April is about 5 degrees above zero. On average, Ft McMurray has 14 cloudy, 10 rainy, 4 sunny, 1 snowy, and 1 partly cloudy day in April. The rains are usually light. April as well as January, February, and December is considered the most uncomfortable time to visit Ft McMurray.