By the end of the century, average annual precipitation is projected to increase across Alaska.

There is general agreement between different climate scenarios for future precipitiation projections in Alaska. Generally, the largest increase is projected for the far northwest of the state and the smallest changes in the Inside Passage region. By the end of the century, precipitation increases range from 10% to 35% in different parts of the state. Spring precipitation is actually projected to decrease in some scenarios, but there is generally high uncertainty between future projections.