March in Federal Way is the rainiest, the windiest, and the cloudiest month of the year. In March, the weather in Federal Way is typically warm. Average daily high temperature in March is about 10 degrees above zero. On average, Federal Way has 23 rainy, 4 sunny, 3 partly cloudy, and 1 cloudy day in March. The rains are usually heavy. March as well as January, February, April, and November is considered the most uncomfortable time to visit Federal Way.