March in Port Townsend is the rainiest month of the year. In March, the weather in Port Townsend is typically warm. Average daily high temperature in March is about 9 degrees above zero. On average, Port Townsend has 23 rainy, 4 sunny, 3 cloudy, and 1 partly cloudy day in March. The rains are usually moderate. March as well as January, February, April, and November is considered the most uncomfortable time to visit Port Townsend.