When you're dreaming of a getaway to Port Heiden, year-round temperatures and rainfall may be important factors to consider. The hottest months are usually August and July with an average temp of 50°F, while the coldest months are January and March with an average of 27°F. The snowiest months in Port Heiden are December, February, April, and March, with each month seeing an average of 33 inches of snowfall.