November in Issaquah is the windiest month of the year. In November, the weather in Issaquah is typically warm. Average daily high temperature in November is about 10 degrees above zero. On average, Issaquah has 19 rainy, 5 partly cloudy, 3 sunny, and 3 cloudy days in November. The rains are usually heavy. November as well as January, February, March, and April is considered the most uncomfortable time to visit Issaquah.