March weather forecast in Issaquah

March in Issaquah is the rainiest, the windiest, and the cloudiest month of the year. In March, the weather in Issaquah is typically cold. Average daily high temperature in March is about 10 degrees above zero. On average, Issaquah has 23 rainy, 4 sunny, 2 cloudy, and 2 partly cloudy days in March. The rains are usually heavy. March as well as January, February, April, and November is considered the most uncomfortable time to visit Issaquah.